CVE-2026-6420

Name: CVE-2026-6420
Creator: NVD / NIST
Published: 2026-05-06T11:16:05.193+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10EPSS 0.12%

Last modified Jun 24, 2026

This CVE is reserved or awaiting analysis. Details will appear once published by NVD.

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.

Metrics

CVSS 3.1

6.3/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L

EPSS Probability

0.12%

2.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1241

References

Timeline

Published: May 6, 2026
Last Modified: Jun 24, 2026
Status: Awaiting Analysis

Are you affected by CVE-2026-6420?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST