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Fencer Vulns
medium 4.7

CVE-2025-64434 json

KubeVirt Improper TLS Certificate Management Handling Allows API Identity Spoofing

published 2025-11-06 12 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-38216 , GHSA-ggp9-c99x-54gp , GO-2025-4107

cvss
4.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits
0
none known

Summary

KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.5.3 and 1.6.1, due to the peer verification logic in virt-handler (via verifyPeerCert), an attacker who compromises a virt-handler instance, could exploit these shared credentials to impersonate virt-api and execute privileged operations against other virt-handler instances potentially compromising the integrity and availability of the VM managed by it. This vulnerability is fixed in 1.5.3 and 1.6.1.

Patch / fix

  • go kubevirt.io/kubevirt 1.5.3, 1.6.0-beta.0.0.20250730135146-231dc69723f3, 1.6.1
  • kubevirt kubevirt 1.5.3, 1.6.1
  • kubevirt SLE Module for Containers 15 SP7 1.6.3-150700.3.13.1

suse advisories SUSE-SU-2025:4330-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

  • kubevirt Azure Linux 3.0 1.5.3-2
  • kubevirt CBL-Mariner 2.0 0.59.0-33

azure linux advisories AZL-69796AZL-69961

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-64434 updated cvss 6.5

kubevirt: KubeVirt: API Identity Spoofing Vulnerability

  • Red Hat OpenShift Virtualization 4 kubevirt
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
11 mo ago

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/kubevirt/kubevirt/security/advisories/GHSA-ggp9-c99x-54gp referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 6.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected packages

ecosystem package affected fixed in
go kubevirt.io/kubevirt
<1.5.3
>=1.6.0-alpha.0, <1.6.1
>=1.6.0-alpha.0, <1.6.0-beta.0.0.20250730135146-231dc69723f3
>=1.6.0-rc.0, <1.6.1
1.5.3
1.6.1
1.6.0-beta.0.0.20250730135146-231dc69723f3

Affected products

  • kubevirt kubevirt

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.