5

CVE-2025-64437: KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes

Analyzed
AliasesCGA-5vr2-p79v-qm57CGA-75mv-wmr8-grw2GHSA-2r4r-5x78-mvqf
Published 07-11-2025Last modified 10-11-2025

Vulnerability summary

CVE-2025-64437 is a medium (CVSS 5.0) vulnerability in kubevirt. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.9% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.0/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.23%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 9 · Related 10
OPENSUSE-SU-2025:15772-1OPENSUSE-SU-2026:11057-1OPENSUSE-SU-2026:11091-1OPENSUSE-SU-2026:20281-1OPENSUSE-SU-2026:21483-1SUSE-SU-2025:4330-1

Timeline

  1. 07-11-2025
    PublishedVulnerability first disclosed.
  2. 10-11-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

Increase +0.02 pp

From 0.21% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Kubevirt

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard1 product
  • docker-machine-driver-harvester< 1.0.6-r4
Kubevirt1 product
  • kubevirt≥ 1.6.0-alpha.0, < 1.6.1 | < 1.5.3 | 1.6.0
Kubevirt.io1 product
  • kubevirt< 1.5.3 | ≥ 1.6.0-alpha.0, < 1.6.1 | ≥ 1.6.0-alpha.0, < 1.6.0-beta.0.0.20250801202148-3ce9f41c54d0
Wolfi1 product
  • docker-machine-driver-harvester< 1.0.6-r4

4 vendors · 4 products

References

7 links