Improper Authentication Affecting kubevirt-virtctl package, versions <1.6.3-150700.3.13.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-SLES157-KUBEVIRTVIRTCTL-14287448
  • published10 Dec 2025
  • disclosed9 Dec 2025

Introduced: 9 Dec 2025

NewCVE-2025-64434  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kubevirt-virtctl to version 1.6.3-150700.3.13.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kubevirt-virtctl package and not the kubevirt-virtctl package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.5.3 and 1.6.1, due to the peer verification logic in virt-handler (via verifyPeerCert), an attacker who compromises a virt-handler instance, could exploit these shared credentials to impersonate virt-api and execute privileged operations against other virt-handler instances potentially compromising the integrity and availability of the VM managed by it. This vulnerability is fixed in 1.5.3 and 1.6.1.

CVSS Base Scores

version 3.1