CVE-2025-64434 MEDIUM

CVE-2025-64434: KubeVirt Improper TLS Certificate Management Handling Allows API Identity Spoofing

Vendor Kubevirt
Product kubevirt
Weakness CWE-287 · Improper authentication
Published November 7, 2025
Last update November 10, 2025

CVSS base score

4.7/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 7, 2025 CVE published
November 10, 2025 Record updated