Missing Authentication for Critical Function in Cisco Identity Services Engine (ISE) - CVE-2026-76447
Published: September 17, 2026
Vulnerability identifier: #VU150682
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-76447
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause the OCSP responder to reload certificate and key material.
The vulnerability exists due to missing authentication in a function of the Online Certificate Status Protocol (OCSP) responder when handling crafted requests. A remote attacker can send a crafted request to cause the OCSP responder to reload certificate and key material on demand.
Affected software
Cisco Identity Services Engine (ISE)
How to mitigate CVE-2026-76447
Install security update from vendor's website.
Cisco Identity Services Engine (ISE) - addressed in versions 3.3 Patch 12, 3.4 Patch 7, 3.5 Patch 4