CVE-2021-3698: Cockpit-Project Cockpit

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

A flaw was found in Cockpit in versions prior to 260 in the way it handles the certificate verification performed by the System Security Services Daemon (SSSD). This flaw allows client certificates to authenticate successfully, regardless of the Certificate Revocation List (CRL) configuration or the certificate status. The highest threat from this vulnerability is to confidentiality.

Affected products

• Cockpit-Project Cockpit: before 260 (fixed in 260)
• Red Hat Enterprise Linux: version 8.0 only

Published 2022-03-10. Last modified 2026-06-17.