CVE-2026-6420
MEDIUM EPSS 2.2%
Published May 6, 20261mo ago · Modified Jun 24, 20266d ago
6.3 CVSS 3.1
Published May 6, 2026 1mo ago
Last Modified Jun 24, 2026 6d ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L Attack Vector Local
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability Low
Threat Intelligence
EPSS Exploit Probability
2.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-1241
References 3
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:28582
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-6420
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2458889
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.