CVE-2025-64435: kubevirt — Exploit & Fix

Description

KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.7.0-beta.0, a logic flaw in the virt-controller allows an attacker to disrupt the control over a running VMI by creating a pod with the same labels as the legitimate virt-launcher pod associated with the VMI. This can mislead the virt-controller into associating the fake pod with the VMI, resulting in incorrect status updates and potentially causing a DoS (Denial-of-Service). This vulnerability is fixed in 1.7.0-beta.0.

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CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-703 CWE-703

Affected Products

Vendor	Product	Versions
kubevirt	kubevirt	< 1.6.3
kubevirt	kubevirt	All

References

Advisories & Patches

https://github.com/kubevirt/kubevirt/commit/9a6f4a3a707992038ef705da4cb3bba8c89d36ba https://github.com/kubevirt/kubevirt/security/advisories/GHSA-9m94-w2vq-hcf9

Exploits

https://github.com/kubevirt/kubevirt/security/advisories/GHSA-9m94-w2vq-hcf9

Frequently Asked Questions

What is CVE-2025-64435? +

KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.7.0-beta.0, a logic flaw in the virt-controller allows an attacker to disrupt the control over a running VMI by creating a pod with the same labels as the legitimate virt-launcher pod associated with the VMI. This can mislead the virt-controller into associating the fake pod with the VMI, resulting in incorrect status updates and potentially causing a DoS (Denial-of-Service). This vulnerability is fixed in 1.7.0-beta.0. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-64435? +

CVE-2025-64435 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-64435? +

CVE-2025-64435 affects products from kubevirt, specifically: kubevirt. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-64435? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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