What is the CVSS score of CVE-2025-20125?

CVE-2025-20125 has a CVSS 3.1 base score of 9.1 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H. EPSS exploitation probability: 2.1%.

Which versions of Identity Services Engine are affected by CVE-2025-20125?

Organizations using A vulnerability in an API of Cisco face critical risk from CVE-2025-20125 rated CVSS 9.1.

Is there a public PoC exploit available for CVE-2025-20125?

Yes, a public proof-of-concept exploit is available for CVE-2025-20125. Prioritise patching immediately. EPSS: 2.1%.

How to fix or mitigate CVE-2025-20125?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Monitor vendor channels for patch availability.

Identity Services Engine CVE-2025-20125

CRITICAL

Improper Authorization (CWE-285)

2025-02-05 psirt@cisco.com

Authentication Bypass Cisco Identity Services Engine

9.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.1 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:25 vuln.today

PoC Detected

Mar 28, 2025 - 13:37 vuln.today

Public exploit code

CVE Published

Feb 05, 2025 - 17:15 nvd

CRITICAL 9.1

DescriptionCVE.org

This vulnerability is due to a lack of authorization in a specific API and improper validation of user-supplied data. An attacker could exploit this vulnerability by sending a crafted HTTP request to a specific API on the device. A successful exploit could allow the attacker to attacker to obtain information, modify system configuration, and reload the device. Note: To successfully exploit this vulnerability, the attacker must have valid read-only administrative credentials. In a single-node deployment, new devices will not be able to authenticate during the reload time.

AnalysisAI

A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker with valid read-only credentials to obtain sensitive information, change node configurations, and restart the. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-285. A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker with valid read-only credentials to obtain sensitive information, change node configurations, and restart the node. This vulnerability is due to a lack of authorization in a specific API and improper validation of user-supplied data. An attacker could exploit this vulnerability by sending a crafted HTTP request to a specific API on the device. A successful exploit could allow the attacker to attacker to obtain information, modify system configuration, and reload the device. Note: To successfully exploit this vulnerability, the attacker must have valid read-only administrative credentials. In a single-node deployment, new devices will not be able to authenticate during the reload time. Affected products include: Cisco Identity Services Engine.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.