CVE-2026-6420
Medium
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.
SeverityMedium
CVSS6.3
Exploit probability—
ProductKeylime
PublishedMay 6, 2026
First seenMay 6, 2026
Weakness typeCWE-1241CWE-1241
How to fix
Update
- keylime7.14.2 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| keylimePyPI | 7.14.0 ≤ v < 7.14.2 | 7.14.2 |
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