CVE-2025-20281: Cisco Identity Services Engine Injection Vulnerability

Required action (CISA's text)

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 (NVD)

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.

SOURCES

• CISA KEVCISA Known Exploited Vulnerabilities catalog

Other Cisco flaws

• CVE-2026-20320: Cisco BroadWorks Improper Restriction of XML External Entity Reference Vulnerability
• CVE-2026-76418: Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability
• CVE-2026-76519: Cisco Secure Email Gateway Relative Path Traversal Vulnerability
• CVE-2026-76504: Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability
• CVE-2026-76460: Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.