Auth bypass in Kubevirt
CVE-2025-64432
KubeVirt is a virtual machine management add-on for Kubernetes. Versions 1.5.3 and below, and 1.6.0 contained a flawed implementation of the Kubernetes aggregation layer's authentication flow which could enable bypass of RBAC controls. It…
Vulnerability class: Broken Authentication
EPSS: 0.001 (3.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Kubevirt — versions < 1.5.3, >= 1.6.0, < 1.6.1, 1.6.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-64432?
- CVE-2025-64432 is a medium-severity vulnerability in Kubevirt, classified under Improper Authentication. CVSS score: 4.7/10. Published 2025-11-07.
- How severe is CVE-2025-64432?
- Medium severity. CVSS v3 base score is 4.7 out of 10.