CRITICAL CISA KEV Actively Exploited

CVE-2025-20337

Cisco ISE API Unauthenticated Remote Code Execution Vulnerability

CVSS v3

CRITICAL

EPSS Score

67.8 %

exploit probability, as of 2026-10-04

CISA KEV

Yes

known exploited

Exploitation

active

SSVC status

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

CISA Known Exploited Vulnerability

Date Added: 2025-07-28
Patch Due Date: 2025-08-18
Ransomware Use: Unknown

Technical details

Published: 2025-07-16
Last Modified: 2025-10-28

Frequently asked questions

What is CVE-2025-20337?

Is CVE-2025-20337 actively exploited?

Yes. CVE-2025-20337 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-08-18.

What is the CVSS score for CVE-2025-20337?

CVE-2025-20337 has a CVSS v3 base score of 10 (CRITICAL severity).

Is CVE-2025-20337 affecting your environment?

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