VULNERABILITY INTELLIGENCE
CVE-2026-6420
CVSS score6.3 MEDIUM
EPSS probability0.12%
CISA KEVNot currently listed
Published2026-05-06
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L
Description
A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent runs, can exploit a vulnerability in the Keylime verifier. The verifier uses a hardcoded challenge nonce for Trusted Platform Module (TPM) quote attestation instead of a cryptographically random value. This allows the attacker to stockpile valid TPM quotes and replay them to evade detection after compromising the system. This issue affects only the push model deployment.
Weakness classification
- secalert@redhat.com: CWE-1241