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Known Exploited Vulnerability
9.8
CRITICAL CVSS 3.1
CVE-2025-53521
F5 BIG-IP Stack-Based Buffer Overflow Vulnerability - [Actively Exploited]
Overview
Description

When a BIG-IP APM access policy is configured on a virtual server, specific malicious traffic can lead to Remote Code Execution (RCE).   Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Details
INFO

Published Date :

Oct. 15, 2025, 2:15 p.m.

Last Modified :

March 31, 2026, 5:12 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

F5 BIG-IP APM contains a stack-based buffer overflow vulnerability that could allow a threat actor to achieve remote code execution.

Required Action :

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Known Ransomware Campaign Use:

Unknown

Notes :

Please adhere to F5’s guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible F5 products affected by this vulnerability. For more information please see: https://my.f5.com/manage/s/article/K000156741 ; https://my.f5.com/manage/s/article/K000160486 ; https://my.f5.com/manage/s/article/K11438344 ; https://nvd.nist.gov/vuln/detail/CVE-2025-53521

Impact
Affected Products

The following products are affected by CVE-2025-53521 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 F5 big-ip_access_policy_manager
2 F5 big-ip_advanced_firewall_manager
3 F5 big-ip_analytics
4 F5 big-ip_application_acceleration_manager
5 F5 big-ip_application_security_manager
6 F5 big-ip_domain_name_system
7 F5 big-ip_fraud_protection_service
8 F5 big-ip_global_traffic_manager
9 F5 big-ip_link_controller
10 F5 big-ip_local_traffic_manager
11 F5 big-ip_policy_enforcement_manager
12 F5 big-ip_advanced_web_application_firewall
13 F5 big-ip_ddos_hybrid_defender
14 F5 big-ip_ssl_orchestrator
15 F5 big-ip_websafe
16 F5 big-ip_edge_gateway
17 F5 big-ip_webaccelerator
18 F5 big-ip_carrier-grade_nat
19 F5 big-ip_application_visibility_and_reporting
20 F5 big-ip_automation_toolchain
21 F5 big-ip_container_ingress_services
: Total Affected Vendor : 1 | Products : 21
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 9dacffd4-cb11-413f-8451-fbbfd4ddc0ab
CVSS 3.1 HIGH [email protected]
CVSS 3.1 CRITICAL [email protected]
CVSS 4.0 HIGH 9dacffd4-cb11-413f-8451-fbbfd4ddc0ab
CVSS 4.0 HIGH [email protected]
CVSS 4.0 CRITICAL [email protected]
Solution
Update BIG-IP to a version that addresses the TMM termination vulnerability.
  • Apply the latest available BIG-IP software update.
  • Consult the vendor for specific upgrade instructions.
  • Test the updated system thoroughly.
Public PoC/Exploit Available at Github

CVE-2025-53521 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-53521.

URL Resource
https://my.f5.com/manage/s/article/K000156741 Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53521 US Government Resource
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-53521 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-53521 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
rulezet/rulezet-scripts

Scripts using rulezet

Python

Updated: 5 days, 22 hours ago
1 stars 0 fork 0 watcher
Born at : April 20, 2026, 8:51 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
cyberdudebivash/CYBERDUDEBIVASH-THREAT-INTEL-PLATFORM

AI POWERED ADVANCED THREAT INTEL PLATFORM

cyberdudebivash cyberdudebivashecosystem

Python Dockerfile JavaScript HTML Shell Batchfile PowerShell YARA Procfile PLpgSQL

Updated: 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Feb. 9, 2026, 4:06 p.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-53521 vulnerability anywhere in the article.

  • The Cyber Express
March 2026 Cyber Threat Landscape Fueled by Ransomware, Breaches, and Access Markets

The 2026 threat landscape continued to intensify in March, with ransomware attacks, expanding data breach activity, and a growing underground market for compromised access shaping the global cybersecu ... Read more

Published Date: Apr 22, 2026 (5 days, 2 hours ago)
  • Daily CyberSecurity
CISA Adds Critical Apache ActiveMQ RCE Flaw to KEV Catalog

The Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent directive after adding a high-severity vulnerability in Apache ActiveMQ to its Known Exploited Vulnerabilities (KEV) Ca ... Read more

Published Date: Apr 17, 2026 (1 week, 3 days ago)
  • The Hacker News
Russian State-Linked APT28 Exploits SOHO Routers in Global DNS Hijacking Campaign

The Russia-linked threat actor known as APT28 (aka Forest Blizzard) has been linked to a new campaign that has compromised insecure MikroTik and TP-Link routers and modified their settings to turn the ... Read more

Published Date: Apr 07, 2026 (2 weeks, 5 days ago)
  • The Hacker News
Docker CVE-2026-34040 Lets Attackers Bypass Authorization and Gain Host Access

A high-severity security vulnerability has been disclosed in Docker Engine that could permit an attacker to bypass authorization plugins (AuthZ) under specific circumstances. The vulnerability, tracke ... Read more

Published Date: Apr 07, 2026 (2 weeks, 5 days ago)
  • The Hacker News
Over 1,000 Exposed ComfyUI Instances Targeted in Cryptomining Botnet Campaign

An active campaign has been observed targeting internet-exposed instances running ComfyUI, a popular stable diffusion platform, to enlist them into a cryptocurrency mining and proxy botnet. "A purpose ... Read more

Published Date: Apr 07, 2026 (2 weeks, 5 days ago)
  • The Hacker News
China-Linked Storm-1175 Exploits Zero-Days to Rapidly Deploy Medusa Ransomware

A China-based threat actor known for deploying Medusa ransomware has been linked to the weaponization of a combination of zero-day and N-day vulnerabilities to orchestrate "high-velocity" attacks and ... Read more

Published Date: Apr 07, 2026 (2 weeks, 6 days ago)
  • The Hacker News
Flowise AI Agent Builder Under Active CVSS 10.0 RCE Exploitation; 12,000+ Instances Exposed

Threat actors are exploiting a maximum-severity security flaw in Flowise, an open-source artificial intelligence (AI) platform, according to new findings from VulnCheck. The vulnerability in question  ... Read more

Published Date: Apr 07, 2026 (2 weeks, 6 days ago)
  • The Hacker News
Fortinet Patches Actively Exploited CVE-2026-35616 in FortiClient EMS

Fortinet has released out-of-band patches for a critical security flaw impacting FortiClient EMS that it said has been exploited in the wild. The vulnerability, tracked as CVE-2026-35616 (CVSS score: ... Read more

Published Date: Apr 05, 2026 (3 weeks, 1 day ago)
  • The Hacker News
China-Linked TA416 Targets European Governments with PlugX and OAuth-Based Phishing

A China-aligned threat actor has set its sights on European government and diplomatic organizations since mid-2025, following a two-year period of minimal targeting in the region. The campaign has bee ... Read more

Published Date: Apr 03, 2026 (3 weeks, 2 days ago)
  • CybersecurityNews
14,000+ F5 BIG-IP APM Exposed Online as Attackers Actively Exploiting RCE Vulnerability

A critical security flaw in F5’s BIG-IP Access Policy Manager (APM) is currently under active exploitation, leaving thousands of enterprise networks at risk. The vulnerability, officially tracked as C ... Read more

Published Date: Apr 03, 2026 (3 weeks, 2 days ago)
  • The Hacker News
Hackers Exploit CVE-2025-55182 to Breach 766 Next.js Hosts, Steal Credentials

A large-scale credential harvesting operation has been observed exploiting the React2Shell vulnerability as an initial infection vector to steal database credentials, SSH private keys, Amazon Web Serv ... Read more

Published Date: Apr 02, 2026 (3 weeks, 3 days ago)
  • The Hacker News
Cisco Patches 9.8 CVSS IMC and SSM Flaws Allowing Remote System Compromise

Cisco has released updates to address a critical security flaw in the Integrated Management Controller (IMC) that, if successfully exploited, could allow an unauthenticated, remote attacker to bypass ... Read more

Published Date: Apr 02, 2026 (3 weeks, 3 days ago)
  • The Hacker News
ThreatsDay Bulletin: Pre-Auth Chains, Android Rootkits, CloudTrail Evasion & 10 More Stories

The latest ThreatsDay Bulletin is basically a cheat sheet for everything breaking on the internet right now. No corporate fluff or boring lectures here, just a quick and honest look at the messy reali ... Read more

Published Date: Apr 02, 2026 (3 weeks, 3 days ago)
  • security.nl
Ruim veertienduizend F5 BIG-IP APM-servers toegankelijk vanaf internet

Ruim veertienduizend F5 BIG-IP APM-servers zijn toegankelijk vanaf internet, zo meldt The Shadowserver Foundation. Aanvallers maken actief misbruik van een kwetsbaarheid in het platform. Het is nog on ... Read more

Published Date: Apr 02, 2026 (3 weeks, 4 days ago)
  • The Hacker News
New Chrome Zero-Day CVE-2026-5281 Under Active Exploitation — Patch Released

Google on Thursday released security updates for its Chrome web browser to address 21 vulnerabilities, including a zero-day flaw that it said has been exploited in the wild. The high-severity vulnerab ... Read more

Published Date: Apr 01, 2026 (3 weeks, 4 days ago)
  • The Hacker News
TrueConf Zero-Day Exploited in Attacks on Southeast Asian Government Networks

A high-severity security flaw in the TrueConf client video conferencing software has been exploited in the wild as a zero-day as part of a campaign targeting government entities in Southeast Asia dubb ... Read more

Published Date: Mar 31, 2026 (3 weeks, 5 days ago)
  • security.nl
Amerikaanse overheid krijgt drie dagen voor installatie Citrix- en F5-updates

Federale Amerikaanse overheidsdiensten moeten beveiligingsupdates voor twee actief aangevallen kwetsbaarheden in producten van Citrix en F5 binnen drie dagen installeren. Het Amerikaanse cyberagentsch ... Read more

Published Date: Mar 31, 2026 (3 weeks, 5 days ago)
  • Hackread - Cybersecurity News, Data Breaches, AI and More
Critical F5 BIG-IP Flaw Upgraded to 9.8 RCE, Exploited in the Wild

Cybersecurity researchers at F5 have issued an urgent warning regarding a severe security flaw affecting their BIG-IP APM systems. Originally, the issue was dismissed as a minor technical glitch, but ... Read more

Published Date: Mar 31, 2026 (3 weeks, 6 days ago)
  • Help Net Security
Critical Fortinet FortiClient EMS bug under active attack (CVE-2026-21643)

A critical SQL injection vulnerability (CVE-2026-21643) in Fortinet FortiClient Endpoint Management Server (EMS), a management server for FortiClient endpoint agents on various platforms, is under act ... Read more

Published Date: Mar 30, 2026 (3 weeks, 6 days ago)
  • Daily CyberSecurity
The CVE Watchtower: Weekly Threat Intelligence Briefing (March 23 – March 29, 2026)

Whether you are steering the organizational ship as a CISO or maintaining the operational engines as a system administrator, cutting through the noise of weekly vulnerabilities is essential to keeping ... Read more

Published Date: Mar 30, 2026 (4 weeks ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-53521 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Mar. 31, 2026

    Action Type Old Value New Value
    Removed CPE Configuration OR *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1
    Removed CPE Configuration OR *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1
    Changed CPE Configuration OR *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 OR *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.3 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8
  • CVE Modified by [email protected]

    Mar. 31, 2026

    Action Type Old Value New Value
    Added CWE CWE-121
    Removed CWE CWE-770
  • Modified Analysis by [email protected]

    Mar. 27, 2026

    Action Type Old Value New Value
    Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53521 Types: US Government Resource
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Mar. 27, 2026

    Action Type Old Value New Value
    Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53521
  • CVE Modified by [email protected]

    Mar. 27, 2026

    Action Type Old Value New Value
    Changed Description When a BIG-IP APM Access Policy is configured on a virtual server, undisclosed traffic can cause TMM to terminate.   Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated. When a BIG-IP APM access policy is configured on a virtual server, specific malicious traffic can lead to Remote Code Execution (RCE).   Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Removed CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Removed CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Initial Analysis by [email protected]

    Oct. 21, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 15.1.0 up to (excluding) 15.1.10.8
    Added CPE Configuration OR *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (excluding) 16.1.6.1
    Added CPE Configuration OR *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (including) 17.5.1
    Added Reference Type F5 Networks: https://my.f5.com/manage/s/article/K000156741 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Oct. 15, 2025

    Action Type Old Value New Value
    Added Description When a BIG-IP APM Access Policy is configured on a virtual server, undisclosed traffic can cause TMM to terminate.   Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CWE CWE-770
    Added Reference https://my.f5.com/manage/s/article/K000156741
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 9.3
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact