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CVE-2026-6420VulnerabilityPublished Updated

Red Hat Security Advisory: keylime security update

Affects Red Hat keylimeSource GCVE Database

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Authoritative record:CVE-2026-6420· Medium 6.3

Not known to be exploited · CVSS 6.3 Medium : upgrade the Red Hat redhat/keylime package to 10.2 when convenient.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.3
EPSS
0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 10.2
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 May 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade the Red Hat redhat/keylime package to 10.2.

Affected software

ProductAffectedFixed in
Red Hatredhat/keylimepkg:rpm/redhat/keylimeOther threatsAffected
  • <10.2
Fixed in
  • 10.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available and should be applied by upgrading Keylime to version 7.14.2 or later as provided by the vendor. Red Hat has released updated packages for Red Hat Enterprise Linux 10 and related platforms to address this issue. Users should follow the vendor's official update instructions to remediate the vulnerability.

Description

Keylime is a TPM based highly scalable remote boot attestation and runtime integrity measurement solution. Security Fix(es): * keylime: Keylime: Security bypass due to hardcoded TPM quote nonce (CVE-2026-6420) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

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