Upstream information

CVE-2026-6420 at MITRE

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.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail CNA (Red Hat) SUSE
Base Score 6.3 6.3
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L
Attack Vector Local Local
Attack Complexity Low Low
Privileges Required High High
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact Low Low
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
CVSS detail SUSE
Base Score 8.3
Vector CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Attack Vector Local
Attack Complexity Low
Attack Requirements None
Privileges Required High
User Interaction None
Vulnerable System Confidentiality Impact High
Vulnerable System Integrity Impact High
Vulnerable System Availability Impact Low
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1264265 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 keylime Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 keylime Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 keylime Affected
SUSE Linux Enterprise Server 15 SP7 keylime Affected
SUSE Linux Enterprise Server 16.0 keylime Affected
SUSE Linux Enterprise Server 16.1 keylime Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 keylime Affected
SUSE Linux Enterprise Server for SAP applications 16.0 keylime Affected
SUSE Linux Enterprise Server for SAP applications 16.1 keylime Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 keylime Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS keylime Affected
SUSE Linux Enterprise High Performance Computing 15 SP5 keylime Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS keylime Affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 keylime Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 keylime Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 keylime Affected
SUSE Linux Enterprise Server 15 SP4 keylime Affected
SUSE Linux Enterprise Server 15 SP4-LTSS keylime Affected
SUSE Linux Enterprise Server 15 SP5 keylime Affected
SUSE Linux Enterprise Server 15 SP5-LTSS keylime Affected
SUSE Linux Enterprise Server 15 SP6 keylime Affected
SUSE Linux Enterprise Server 15 SP6-LTSS keylime Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 keylime Affected
SUSE Manager Proxy 4.3 keylime Affected
SUSE Manager Proxy LTS 4.3 keylime Affected
SUSE Manager Retail Branch Server 4.3 keylime Affected
SUSE Manager Retail Branch Server LTS 4.3 keylime Affected
SUSE Manager Server 4.3 keylime Affected
SUSE Manager Server LTS 4.3 keylime Affected
Products past their end of life and not receiving proactive updates anymore.
SUSE Linux Enterprise Desktop 15 SP4 keylime Affected
SUSE Linux Enterprise Desktop 15 SP5 keylime Affected
SUSE Linux Enterprise Desktop 15 SP6 keylime Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS keylime Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS keylime Affected
SUSE Linux Enterprise High Performance Computing 15 SP6 keylime Affected
SUSE Linux Enterprise Real Time 15 SP4 keylime Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 keylime Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 keylime Affected
openSUSE Leap 15.4 keylime Affected
openSUSE Leap 15.5 keylime Affected
openSUSE Leap 15.6 keylime Affected


SUSE Timeline for this CVE

CVE page created: Wed May 6 12:22:31 2026
CVE page last modified: Fri May 8 14:52:40 2026