{"id":"CVE-2021-3406","aliases":["EUVD-2021-26734","GHSA-78f8-6c68-375m"],"status":"published","description":"A flaw was found in keylime 5.8.1 and older. The issue in the Keylime agent and registrar code invalidates the cryptographic chain of trust from the Endorsement Key certificate to agent attestations.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00658,"percentile":0.51843,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-295","CWE-347"],"published":"2021-02-25T19:15:57Z","modified":"2026-10-20T10:54:45Z","products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"keylime","product":"keylime"},{"vendor":"keylime project","product":"keylime"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1932469","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/keylime/keylime/security/advisories/GHSA-78f8-6c68-375m","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YAWKEF2LVXUME266T6RNRVBGAD375QAT/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]}],"sources":{"cve":[{"id":"CVE-2021-3406","description":"A flaw was found in keylime 5.8.1 and older. The issue in the Keylime agent and registrar code invalidates the cryptographic chain of trust from the Endorsement Key certificate to agent attestations.","status":"published","published":"2021-02-25T19:15:57Z","modified":"2024-08-03T16:53:17.575Z","cwes":["CWE-347"],"updated_at":"2026-11-02T14:33:03.671751Z"}],"euvd":[{"id":"EUVD-2021-26734","description":"A flaw was found in keylime 5.8.1 and older. The issue in the Keylime agent and registrar code invalidates the cryptographic chain of trust from the Endorsement Key certificate to agent attestations.","status":"published","published":"2021-02-25T19:15:57Z","modified":"2024-08-03T16:53:17Z","updated_at":"2026-11-03T03:25:13.052236Z"}],"nvd":[{"id":"CVE-2021-3406","description":"A flaw was found in keylime 5.8.1 and older. The issue in the Keylime agent and registrar code invalidates the cryptographic chain of trust from the Endorsement Key certificate to agent attestations.","status":"published","published":"2021-02-25T20:15:11.707Z","modified":"2026-06-17T04:05:02.187Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-347","CWE-295"],"updated_at":"2026-11-02T14:06:50.399901Z"}],"osv":[{"id":"CVE-2021-3406","description":"A flaw was found in keylime 5.8.1 and older. The issue in the Keylime agent and registrar code invalidates the cryptographic chain of trust from the Endorsement Key certificate to agent attestations.","status":"published","published":"2021-02-25T20:15:11.707Z","modified":"2026-10-20T10:54:45.307886229Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:20.13324Z"}]}}