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4.3
MEDIUM CVSS 3.1
CVE-2026-20732
BIG-IP Configuration utility vulnerability
Description

A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

INFO

Published Date :

Feb. 4, 2026, 3:16 p.m.

Last Modified :

Feb. 13, 2026, 9:44 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2026-20732 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
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 LOW 9dacffd4-cb11-413f-8451-fbbfd4ddc0ab
CVSS 3.1 LOW [email protected]
CVSS 3.1 MEDIUM [email protected]
CVSS 4.0 LOW 9dacffd4-cb11-413f-8451-fbbfd4ddc0ab
CVSS 4.0 LOW [email protected]
Solution
Update BIG-IP to patch the spoofing vulnerability in the Configuration utility.
  • Consult F5 support for specific patch details.
  • Apply the recommended BIG-IP update.
  • Verify the patch is correctly installed.
  • Test for vulnerability resolution.
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-2026-20732.

URL Resource
https://my.f5.com/manage/s/article/K000156644 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-20732 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-2026-20732 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).

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

The following list is the news that have been mention CVE-2026-20732 vulnerability anywhere in the article.

  • CybersecurityNews
F5 Patches Critical Vulnerabilities in BIG-IP, NGINX, and Related Products

F5 Patches Critical Vulnerabilities F5 released its February 2026 Quarterly Security Notification on February 4, announcing several medium and low-severity CVEs, plus a security exposure affecting BIG ... Read more

Published Date: Feb 06, 2026 (2 weeks, 4 days 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-2026-20732 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.

  • Initial Analysis by [email protected]

    Feb. 13, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
    Added CWE NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 16.1.0 up to (including) 16.1.6
    Added CPE Configuration OR *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_advanced_web_application_firewall:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_application_visibility_and_reporting:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_automation_toolchain:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_carrier-grade_nat:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_container_ingress_services:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_ddos_hybrid_defender:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_edge_gateway:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:* versions from (including) 17.5.0. up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_ssl_orchestrator:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_webaccelerator:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 17.1.0 up to (excluding) 17.1.3.1 *cpe:2.3:a:f5:big-ip_websafe:*:*:*:*:*:*:*:* versions from (including) 17.5.0 up to (excluding) 17.5.1.4
    Added Reference Type F5 Networks: https://my.f5.com/manage/s/article/K000156644 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Feb. 04, 2026

    Action Type Old Value New Value
    Added Description A vulnerability exists in an undisclosed BIG-IP Configuration utility page that may allow an attacker to spoof error messages.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
    Added CVSS V4.0 AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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:H/PR:N/UI:R/S:U/C:N/I:L/A:N
    Added CWE CWE-451
    Added Reference https://my.f5.com/manage/s/article/K000156644
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.
Vulnerability Scoring Details
Base CVSS Score: 2.3
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: 4.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact