CVE-2025-64434: Kubevirt

Medium severity, CVSS 6.3. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Kubevirt Kubevirt: before 1.5.3 (fixed in 1.5.3); version 1.6.0 only

Published 2025-11-07. Last modified 2026-06-17.