Cisco Warns of Critical ISE 0-Day Vulnerability Exploited in Attacks
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.
- Unauthenticated remote attackers can bypass the ISE management interface
- Successful exploitation may grant root command execution and full node control
- Fixed releases span ISE 3.1 Patch 12 through 3.5 Patch 4
- ISE 3.0 is end of maintenance and must be migrated
- Flaw discovered internally during a TAC support case
- CVEs
- CVE-2026-76460
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-76460 | Unauthenticated Management Interface Bypass in Cisco ISE and ISE-PIC | 10.0 | 76% | KEVPoC | KEV |
From the original article
2 min read at cybersecuritynews.com
Cisco has issued an urgent security advisory for a critical zero-day vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC). The flaw, tracked as CVE-2026-76460, is already being actively exploited, according to Cisco’s Product Security Incident Response Team. The vulnerability carries a maximum CVSS score of 10.
By Abinaya · cybersecuritynews.com
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