CVE-2025-64432
4.7 · MEDIUMOverview
CVE-2025-64432 is a medium-severity vulnerability affecting kubevirt kubevirt. It was published on November 7, 2025 and has a CVSS 3.1 base score of 4.7 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
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 was discovered that the virt-api component fails to correctly authenticate the client when receiving API requests over mTLS. In particular, it fails to validate the CN (Common Name) field in the received client TLS certificates against the set of allowed values defined in the extension-apiserver-authentication configmap. Failre to validate certain fields in the client TLS certificate may allow an attacker to bypass existing RBAC controls by directly communicating with the aggregated API server, impersonating the Kubernetes API server and its aggregator component. This issue is fixed in versions 1.5.3 and 1.6.1.
Remediation
Check the references section for vendor advisories and patches from kubevirt. Update kubevirt to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| kubevirt | kubevirt | >= 0, < 1.5.3 | Affected |
References
Frequently Asked Questions
What is CVE-2025-64432?
CVE-2025-64432 is a medium-severity vulnerability affecting kubevirt kubevirt. It was published on November 7, 2025 and has a CVSS 3.1 base score of 4.7 (MEDIUM).
How severe is CVE-2025-64432?
This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-64432?
Check the references section for vendor advisories and patches from kubevirt. Update kubevirt to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-64432?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-64432 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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