What is the CVSS score of CVE-2025-64437?

CVE-2025-64437 has a CVSS 3.1 base score of 5.0 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.0%.

Which versions of Kubernetes are affected by CVE-2025-64437?

Organizations using versions should be aware of moderate risk from CVE-2025-64437 rated CVSS 5.0. Exploitation could compromise the security of affected deployments.. A patch is available.

Is there a public PoC exploit available for CVE-2025-64437?

Yes, a public proof-of-concept exploit is available for CVE-2025-64437. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-64437?

Within 30 days: Identify affected systems running versions and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Kubernetes CVE-2025-64437

MEDIUM

Improper Link Resolution Before File Access (CWE-59)

2025-11-07 security-advisories@github.com

Information Disclosure Kubernetes Red Hat Suse Kubevirt

5.0

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:21 vuln.today

Patch released

Mar 28, 2026 - 19:21 nvd

Patch available

PoC Detected

Nov 25, 2025 - 17:16 vuln.today

Public exploit code

CVE Published

Nov 07, 2025 - 23:15 nvd

MEDIUM 5.0

DescriptionNVD

KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.

AnalysisAI

KubeVirt is a virtual machine management add-on for Kubernetes. Rated medium severity (CVSS 5.0). Public exploit code available.

Technical ContextAI

This vulnerability is classified under CWE-59. KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1. Affected products include: Kubevirt. Version information: before 1.5.3.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.