Cisco Warns of Critical ISE 0-Day Vulnerability Exploited in Attacksnew
Cisco confirms zero-day CVE-2026-76460 (CVSS 10.0) in ISE is under active exploitation, granting unauthenticated root command execution; patches released.
Cisco's PSIRT issued an urgent advisory for CVE-2026-76460, an authentication bypass via insufficient controls on an API endpoint in Cisco ISE and ISE-PIC, confirmed to be actively exploited with a CVSS score of 10.0. Exploitation can yield root-level command execution, enabling persistence, credential theft, and lateral movement from the network policy platform. Fixed releases are ISE 3.1 Patch 12, 3.2 Patch 11, 3.3 Patch 12, 3.4 Patch 7, and 3.5 Patch 4; EOL version 3.0 requires migration, and iACLs offer only temporary mitigation. The flaw was discovered while resolving a TAC support case, and Cisco provides hunting guidance including access.log review and firewall log analysis.