CVE-2025-20337
Critical 10.0 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Cisco Identity Services Engine Injection Vulnerability
- Added to catalog
- Remediation due date (US federal)
- 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.
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.
Metrics
- CVSS 3.1
-
10.0 (CRITICAL)
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 74% (percentile: 99) as of 1 November 2026
- CWE
- CWE-74
Affected products
cisco: identity services engine; cisco: identity services engine passive identity connector
References
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/c… Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025… US Government Resource