CVE-2026-76447 Cisco Identity Services Engine Certificate Reload Vulnerability

Medium 5.3 Published 16 Sep 2026 Updated 17 Sep 2026

Unauthenticated remote attackers can trigger an administrative reload of OCSP responder certificates and keys due to missing authentication, potentially causing service disruption.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-76447?

CVE-2026-76447 is a medium-severity missing authorization vulnerability in Cisco Identity Services Engine, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the Online Certificate Status Protocol (OCSP) responder of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to cause an administrative reload of the OCSP responder certificate and key material. This vulnerability is due to missing authentication on a function of the OCSP responder. An attacker could exploit this vulnerability by sending a crafted request to an affected device. A successful exploit could allow the attacker to cause the OCSP responder to reload certificate and key material on demand.

Weakness: CWE-306

Which versions are affected by CVE-2026-76447?

It affects 2 products.

Products include Cisco Identity Services Engine, Cisco Identity Services Engine Passive Identity Connector.

How do I fix CVE-2026-76447?

No fix has been published for CVE-2026-76447 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-76447 being exploited?

There is no known exploitation of CVE-2026-76447 in the wild and no public exploit code.

All Cisco Identity Services Engine vulnerabilities

Sources

Also known as GHSA-vwx3-phv6-wmxp.