Known Exploited Vulnerability
10.0
CRITICAL CVSS 3.1
CVE-2025-20337
Cisco Identity Services Engine Injection Vulnerability - [Actively Exploited]
Description

A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying operating system as root. The attacker does not require any valid credentials to exploit this vulnerability. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to obtain root privileges on an affected device.

INFO

Published Date :

July 16, 2025, 5:15 p.m.

Last Modified :

July 29, 2025, 1 a.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 :

Cisco Identity Services Engine contains an injection vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC due to insufficient validation of user-supplied input allowing an attacker to exploit this vulnerability by submitting a crafted API request. Successful exploitation could allow an attacker to perform remote code execution and obtaining root privileges on an affected device.

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.

Notes :

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-rce-ZAd2GnJ6 ; https://nvd.nist.gov/vuln/detail/CVE-2025-20337

Affected Products

The following products are affected by CVE-2025-20337 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 Cisco identity_services_engine
2 Cisco identity_services_engine_passive_identity_connector
: Total Affected Vendor : 1 | Products : 2
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 CRITICAL [email protected]
Public PoC/Exploit Available at Github

CVE-2025-20337 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

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-2025-20337.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-rce-ZAd2GnJ6 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-2025-20337 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-2025-20337 weaknesses.

CAPEC-3: Using Leading 'Ghost' Character Sequences to Bypass Input Filters Using Leading 'Ghost' Character Sequences to Bypass Input Filters CAPEC-6: Argument Injection Argument Injection CAPEC-7: Blind SQL Injection Blind SQL Injection CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-28: Fuzzing Fuzzing CAPEC-34: HTTP Response Splitting HTTP Response Splitting CAPEC-42: MIME Conversion MIME Conversion CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-51: Poison Web Service Registry Poison Web Service Registry CAPEC-52: Embedding NULL Bytes Embedding NULL Bytes CAPEC-53: Postfix, Null Terminate, and Backslash Postfix, Null Terminate, and Backslash CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic Using Slashes and URL Encoding Combined to Bypass Validation Logic CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-71: Using Unicode Encoding to Bypass Validation Logic Using Unicode Encoding to Bypass Validation Logic CAPEC-72: URL Encoding URL Encoding CAPEC-76: Manipulating Web Input to File System Calls Manipulating Web Input to File System Calls CAPEC-78: Using Escaped Slashes in Alternate Encoding Using Escaped Slashes in Alternate Encoding CAPEC-79: Using Slashes in Alternate Encoding Using Slashes in Alternate Encoding CAPEC-80: Using UTF-8 Encoding to Bypass Validation Logic Using UTF-8 Encoding to Bypass Validation Logic CAPEC-83: XPath Injection XPath Injection CAPEC-84: XQuery Injection XQuery Injection CAPEC-101: Server Side Include (SSI) Injection Server Side Include (SSI) Injection CAPEC-105: HTTP Request Splitting HTTP Request Splitting CAPEC-108: Command Line Execution through SQL Injection Command Line Execution through SQL Injection CAPEC-120: Double Encoding Double Encoding CAPEC-135: Format String Injection Format String Injection CAPEC-250: XML Injection XML Injection CAPEC-267: Leverage Alternate Encoding Leverage Alternate Encoding CAPEC-273: HTTP Response Smuggling HTTP Response Smuggling

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
barbaraeivyu/CVE-2025-20337-EXP

None

Updated: 2 weeks, 2 days ago
1 stars 0 fork 0 watcher
Born at : July 19, 2025, 10:18 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
DevGreick/devgreick

None

Python

Updated: 6 hours, 26 minutes ago
0 stars 0 fork 0 watcher
Born at : Oct. 29, 2024, 8:10 p.m. This repo has been linked 10 different CVEs too.
Profile Photo
ums91/CISA_BOT

CISA Bot is a GitHub bot that automatically monitors the Cybersecurity and Infrastructure Security Agency (CISA) Known Exploited Vulnerabilities (KEV) Catalog. When new vulnerabilities are published in the KEV, the bot creates GitHub issues in this repository with detailed information about each vulnerability.

Python

Updated: 1 day, 10 hours ago
2 stars 1 fork 1 watcher
Born at : Oct. 29, 2024, 10:19 a.m. This repo has been linked 199 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-2025-20337 vulnerability anywhere in the article.

  • europa.eu
Cyber Brief 25-08 - July 2025

Cyber Brief (July 2025)August 4, 2025 - Version: 1TLP:CLEARExecutive summaryWe analysed 287 open source reports for this Cyber Brief1.Relating to cyber policy and law enforcement, the EU, UK, and US h ... Read more

Published Date: Aug 04, 2025 (1 week, 4 days ago)
  • The Cyber Express
CISA Adds Cisco ISE and PaperCut Vulnerabilities to Known Exploited Vulnerabilities Catalog

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued a critical alert, adding three high-impact vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog. These inclu ... Read more

Published Date: Jul 29, 2025 (2 weeks, 3 days ago)
  • CybersecurityNews
CISA Warns of Cisco Identity Services Engine Vulnerability Exploited in Attacks

CISA has issued an urgent warning regarding two critical injection vulnerabilities in Cisco’s Identity Services Engine (ISE) that threat actors are actively exploiting. The vulnerabilities, tracked as ... Read more

Published Date: Jul 29, 2025 (2 weeks, 3 days ago)
  • TheCyberThrone
CISA adds CISCO ISE and PaperCut MF flaws to KEV Catalog

Skip to content July 29, 2025The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added three significant vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog on July 2 ... Read more

Published Date: Jul 29, 2025 (2 weeks, 3 days ago)
  • BleepingComputer
Exploit available for critical Cisco ISE bug exploited in attacks

Security researcher Bobby Gould has published a blog post demonstrating a complete exploit chain for CVE-2025-20281, an unauthenticated remote code execution vulnerability in Cisco Identity Services E ... Read more

Published Date: Jul 28, 2025 (2 weeks, 3 days ago)
  • Zero Day Initiative
CVE-2025-20281: Cisco ISE API Unauthenticated Remote Code Execution Vulnerability

On January 25th, 2025, the Trend Zero Day Initiative (ZDI) received a report from Kentaro Kawane of GMO Cybersecurity by Ierae regarding a deserialization of untrusted data vulnerability in Cisco Iden ... Read more

Published Date: Jul 25, 2025 (2 weeks, 6 days ago)
  • security.nl
Shadowserver: kritiek Cisco ISE-lek sinds 5 juli misbruik bij aanvallen

Een kritieke kwetsbaarheid in Cisco Identity Services Engine (ISE) en Cisco ISE Passive Identity Connector (ISE-PIC) is sinds 5 juli misbruikt bij aanvallen, zo stelt The Shadowserver Foundation, een ... Read more

Published Date: Jul 25, 2025 (2 weeks, 6 days ago)
  • The Register
No login? No problem: Cisco ISE flaw gave root access before fix arrived, say researchers

Threat actors have actively exploited a newly patched vulnerability in Cisco's Identity Services Engine (ISE) software since early July, weeks before the networking giant got around to issuing a fix. ... Read more

Published Date: Jul 24, 2025 (3 weeks ago)
  • Help Net Security
Maximum severity Cisco ISE vulnerabilities exploited by attackers

One or more vulnerabilities affecting Cisco Identity Services Engine (ISE) are being exploited in the wild, Cisco has confirmed by updating the security advisory for the flaws. About the vulnerabiliti ... Read more

Published Date: Jul 23, 2025 (3 weeks, 2 days ago)
  • security.nl
Cisco waarschuwt voor actief misbruik van kritieke ISE-kwetsbaarheden

Aanvallers maken actief misbruik van kritieke kwetsbaarheden in Cisco Identity Services Engine (ISE) en Cisco ISE Passive Identity Connector (ISE-PIC) waardoor kwetsbare servers volledig op afstand zi ... Read more

Published Date: Jul 22, 2025 (3 weeks, 2 days ago)
  • BleepingComputer
Cisco: Maximum-severity ISE RCE flaws now exploited in attacks

Cisco is warning that three recently patched critical remote code execution vulnerabilities in Cisco Identity Services Engine (ISE) are now being actively exploited in attacks. Although the vendor did ... Read more

Published Date: Jul 22, 2025 (3 weeks, 2 days ago)
  • The Hacker News
Cisco Confirms Active Exploits Targeting ISE Flaws Enabling Unauthenticated Root Access

Jul 22, 2025Ravie LakshmananNetwork Security / Vulnerability Cisco on Monday updated its advisory of a set of recently disclosed security flaws in Identity Services Engine (ISE) and ISE Passive Iden ... Read more

Published Date: Jul 22, 2025 (3 weeks, 2 days ago)
  • CybersecurityNews
Cisco Warns of Identity Services Engine RCE Vulnerability Exploited in the Wild

Cisco Systems has issued a critical security advisory warning of multiple remote code execution vulnerabilities in its Identity Services Engine (ISE) that are being actively exploited by attackers in ... Read more

Published Date: Jul 22, 2025 (3 weeks, 3 days ago)
  • Daily CyberSecurity
Urgent: Cisco ISE Flaws (CVSS 10.0) Actively Exploited in the Wild – Patch Immediately!

Cisco has issued an urgent update to its security advisory, revealing that three critical remote code execution (RCE) vulnerabilities in Cisco Identity Services Engine (ISE) and ISE-PIC are being acti ... Read more

Published Date: Jul 22, 2025 (3 weeks, 3 days ago)
  • The Cyber Express
CrushFTP Servers Hit by Critical Zero-Day Vulnerability CVE-2025-54309

A new zero-day vulnerability in CrushFTP file transfer servers is being actively exploited by cybercriminals, compromising systems around the world. Tracked as CVE-2025-54309, the CrushFTP zero-day vu ... Read more

Published Date: Jul 21, 2025 (3 weeks, 4 days ago)
  • The Cyber Express
Zero-Day Vulnerability Hits Microsoft SharePoint, Urgent Patch Issued

Microsoft has issued a warning about active cyberattacks targeting on-premises SharePoint servers widely used by government agencies and businesses. The cyberattacks exploit a zero-day vulnerability t ... Read more

Published Date: Jul 21, 2025 (3 weeks, 4 days ago)
  • CybersecurityNews
Weekly Cybersecurity Newsletter: Chrome 0-Day, VMware Flaws Patched, Fortiweb Hack, Teams Abuse, and More

It’s been a busy seven days for security alerts. Google is addressing another actively exploited zero-day in Chrome, and VMware has rolled out key patches for its own set of vulnerabilities. We’ll als ... Read more

Published Date: Jul 20, 2025 (3 weeks, 4 days ago)
  • TheCyberThrone
VMware Fixes Vulnerabilities Exploited at Pwn2Own Berlin

Following successful live exploit demonstrations at the Pwn2Own Berlin 2025 security competition held in May, VMware has patched four zero-day vulnerabilities affecting several of its virtualization p ... Read more

Published Date: Jul 19, 2025 (3 weeks, 5 days ago)
  • The Cyber Express
Ivanti Bugs Exploited Even After Three Months of Patch Availability

Japan’s cyber defenders have raised the red flag, once again, for a set of Ivanti Connect Secure vulnerabilities that continue to be exploited to present day, although a patch has been available for t ... Read more

Published Date: Jul 18, 2025 (4 weeks ago)
  • security.nl
Cisco waarschuwt voor kritieke kwetsbaarheden Cisco ISE en Cisco ISE-PIC

Cisco waarschuwt voor meerdere critical kwetsbaarheden in Cisco Identity Services Engine (ISE) en Cisco ISE Passive Identity Connector (ISE-PIC). De kwetsbaarheden stellen kwaadwillenden in staat om a ... Read more

Published Date: Jul 18, 2025 (4 weeks ago)
  • The Cyber Express
New Cisco Bugs Rated CVSS 10.0, Patch Immediately

Cisco has issued a new security advisory warning of newly discovered vulnerabilities in its Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC), revealing serious security flaw ... Read more

Published Date: Jul 18, 2025 (4 weeks ago)
  • TheCyberThrone
CVE-2025-20337: Cisco ISE Critical RCE Vulnerability

Skip to content July 18, 2025SummaryCVE-2025-20337 is a critical remote code execution (RCE) vulnerability affecting Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE- ... Read more

Published Date: Jul 18, 2025 (4 weeks ago)
  • The Register
Watch out, another max-severity, make-me-root Cisco bug on the loose

Cisco has issued a patch for a critical 10 out of 10 severity bug in its Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) that could allow an unauthenticated, remote attacke ... Read more

Published Date: Jul 17, 2025 (4 weeks ago)
  • BleepingComputer
Max severity Cisco ISE bug allows pre-auth command execution, patch now

A critical vulnerability (CVE-2025-20337) in Cisco's Identity Services Engine (ISE) could be exploited to let an unauthenticated attacker store malicious files, execute arbitrary code, or gain root pr ... Read more

Published Date: Jul 17, 2025 (4 weeks ago)
  • Daily CyberSecurity
Made by Google 2025: Pixel 10, Pixel Watch 4, and More AI Innovations Revealed

Image: Google Google has confirmed that this year’s Made by Google event will take place on August 20 at 1 PM Eastern Time, returning to New York City. The highly anticipated Pixel 10 lineup is expect ... Read more

Published Date: Jul 17, 2025 (4 weeks, 1 day ago)
  • Daily CyberSecurity
Critical Cisco ISE Flaw CVE-2025-20337 (CVSS 10.0) Allows Unauthenticated Root RCE – Patch Immediately

A critical vulnerability was found in Cisco Identity Services Engine (ISE) and Cisco ISE-PIC. Tracked as CVE-2025-20337, the flaw is rated a maximum CVSS score of 10, highlighting its severity and pot ... Read more

Published Date: Jul 17, 2025 (4 weeks, 1 day ago)
  • Daily CyberSecurity
SonicWall SMA Devices Under Attack: UNC6148 Deploys OVERSTEP Rootkit for Persistent Access

Google’s Threat Intelligence Group (GTIG) uncovers a stealthy, sophisticated campaign led by a financially motivated actor tracked as UNC6148. This campaign targets end-of-life SonicWall Secure Mobile ... Read more

Published Date: Jul 17, 2025 (4 weeks, 1 day ago)

The following table lists the changes that have been made to the CVE-2025-20337 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.

  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Jul. 29, 2025

    Action Type Old Value New Value
    Added Date Added 2025-07-28
    Added Due Date 2025-08-18
    Added 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.
    Added Vulnerability Name Cisco Identity Services Engine Injection Vulnerability
  • Initial Analysis by [email protected]

    Jul. 17, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:cisco:identity_services_engine:3.4.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch6:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.3.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.4.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch6:*:*:*:*:*:*
    Added Reference Type Cisco Systems, Inc.: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-rce-ZAd2GnJ6 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Jul. 16, 2025

    Action Type Old Value New Value
    Added Description A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying operating system as root. The attacker does not require any valid credentials to exploit this vulnerability. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to obtain root privileges on an affected device.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    Added CWE CWE-74
    Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-unauth-rce-ZAd2GnJ6
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: 10
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact