CVE Catalog

CVE-2026-76447

MediumCVSS 5.3
Published: Translated: NVD NIST

Summary

A vulnerability in the Online Certificate Status Protocol (OCSP) responder of Cisco ISE and Cisco ISE-PIC allows an unauthenticated remote attacker to cause an administrative reload of the OCSP responder certificate and key material. It is caused by missing authentication on a function of the OCSP responder. An attacker could send a crafted request to trigger the reload of certificate and key material on demand.

Risk Assessment

An unauthenticated attacker could repeatedly force the OCSP responder to reload its certificate and key material, potentially disrupting the service or contributing to a denial-of-service condition.

Recommendation

Apply the Cisco patches for ISE and ISE-PIC and consider restricting network access to the OCSP responder to trusted sources.

Other vulnerabilities in Cisco Identity Services Engine (ISE)

See all
Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS