CVE-2026-76447: Cisco Identity Services Engine Certificate Reload Vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An unauthenticated remote attacker can exploit it by sending a crafted request to an affected Cisco ISE or Cisco ISE-PIC device. No privileges or user interaction are required.
What is the operational impact of a successful exploit?
The attacker can trigger an administrative reload of the OCSP responder's certificate and key material on demand. The provided information identifies an availability impact, but does not indicate confidentiality or integrity impact.
Is a default deployment affected?
The available information does not state whether the vulnerable OCSP responder function is enabled or exposed by default. Exposure depends on whether an affected device provides the vulnerable OCSP responder function to a remote attacker.