Red Hat Enterprise Linux (keylime): Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen
A security vulnerability (CVE-2026-6420) in Keylime, a TPM-based remote boot attestation and runtime integrity measurement solution, allows a security bypass due to a hardcoded TPM quote nonce. This issue affects Red Hat Enterprise Linux 10 and related packages. Red Hat has issued a security update to address this vulnerability with a moderate severity rating.
AI Analysis
Technical Summary
CVE-2026-6420 is a vulnerability in Keylime, a TPM-based remote attestation system used in Red Hat Enterprise Linux 10, caused by a hardcoded TPM quote nonce that enables an attacker to bypass security mechanisms. The vulnerability affects multiple architectures and variants of Red Hat Enterprise Linux 10. Red Hat has released a security update (RHSA-2026:28582) that fixes this issue by removing the hardcoded nonce and improving the security of the attestation process.
Potential Impact
The vulnerability allows an attacker with high privileges on the local system to bypass security protections related to TPM-based attestation, potentially compromising the integrity verification of the system. The impact includes high confidentiality and integrity risks, with a low impact on availability. No known exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has released an official security update for Keylime in Red Hat Enterprise Linux 10 (RHSA-2026:28582) that addresses this vulnerability. Users should apply the update as detailed in the Red Hat advisory and article https://access.redhat.com/articles/11258 to remediate the issue. No additional mitigations are specified or required beyond applying the official patch.
Red Hat Enterprise Linux (keylime): Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen
Description
A security vulnerability (CVE-2026-6420) in Keylime, a TPM-based remote boot attestation and runtime integrity measurement solution, allows a security bypass due to a hardcoded TPM quote nonce. This issue affects Red Hat Enterprise Linux 10 and related packages. Red Hat has issued a security update to address this vulnerability with a moderate severity rating.
CVSS v3.1
Score 6.3medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6420 is a vulnerability in Keylime, a TPM-based remote attestation system used in Red Hat Enterprise Linux 10, caused by a hardcoded TPM quote nonce that enables an attacker to bypass security mechanisms. The vulnerability affects multiple architectures and variants of Red Hat Enterprise Linux 10. Red Hat has released a security update (RHSA-2026:28582) that fixes this issue by removing the hardcoded nonce and improving the security of the attestation process.
Potential Impact
The vulnerability allows an attacker with high privileges on the local system to bypass security protections related to TPM-based attestation, potentially compromising the integrity verification of the system. The impact includes high confidentiality and integrity risks, with a low impact on availability. No known exploits in the wild have been reported.
Mitigation Recommendations
Red Hat has released an official security update for Keylime in Red Hat Enterprise Linux 10 (RHSA-2026:28582) that addresses this vulnerability. Users should apply the update as detailed in the Red Hat advisory and article https://access.redhat.com/articles/11258 to remediate the issue. No additional mitigations are specified or required beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:28582
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- 3.1
Threat ID: 6a3c0ceeeed863c81e2383ed
Added to database: 06/24/2026, 16:59:26 UTC
Last enriched: 07/03/2026, 01:14:23 UTC
Last updated: 08/08/2026, 00:41:15 UTC
Views: 86
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