CVE-2025-64437

KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes

Published Nov 7, 2025 CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-2r4r-5x78-mvqf KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes
History
Type Values Removed Values Added
CPEs cpe:2.3:a:kubevirt:kubevirt:*:*:*:*:*:kubernetes:*:*
cpe:2.3:a:kubevirt:kubevirt:1.6.0:*:*:*:*:kubernetes:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Kubevirt
Kubevirt kubevirt
Vendors & Products Kubevirt
Kubevirt kubevirt
Type Values Removed Values Added
Description 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.
Title KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes
Weaknesses CWE-59
References
Metrics cvssV3_1

{'score': 5, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Nov 10, 2025, 6:50 PM
Reserved
Nov 3, 2025, 10:12 PM
Status
Analyzed
Published
Nov 7, 2025, 11:15 PM
Modified
Jun 17, 2026, 9:54 AM
Severity
Moderate
Public date
Nov 7, 2025, 11:04 PM