KubeVirt up to 1.5.2/1.6.0 on Kubernetes improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in KubeVirt up to 1.5.2/1.6.0 on Kubernetes. It has been rated as critical. This affects an unknown part. This manipulation causes improper authentication. This vulnerability is tracked as CVE-2025-64434. The attack is restricted to local execution. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic was found in KubeVirt up to 1.5.2/1.6.0 on Kubernetes. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-64434 since 11/03/2025. The exploitation appears to be difficult. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 278074 (SUSE SLES15 Security Update : kubevirt, virt-api-container, virt-controller-container, virt-exportproxy-container, virt-exportserver-container, virt-handler-container, virt-launcher-container, virt-libguestfs-tools-container, virt-operator-container, virt-pr-helper-container (SUSE-SU-2025:4330-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.5.3 or 1.6.1 eliminates this vulnerability. Applying the patch 231dc69723f331dc02f65a31ab4c3d6869f40d6a is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (278074) and EUVD (EUVD-2025-38216). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.6
VulDB Temp Score: 3.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.3
NVD Vector: 🔒

CNA Base Score: 4.7
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 278074
Nessus Name: SUSE SLES15 Security Update : kubevirt, virt-api-container, virt-controller-container, virt-exportproxy-container, virt-exportserver-container, virt-handler-container, virt-launcher-container, virt-libguestfs-tools-container, virt-operator-container, virt-pr-helper-container (SUSE-SU-2025:4330-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: KubeVirt 1.5.3/1.6.1
Patch: 231dc69723f331dc02f65a31ab4c3d6869f40d6a

Timelineinfo

11/03/2025 CVE reserved
11/08/2025 +5 days Advisory disclosed
11/08/2025 +0 days VulDB entry created
12/11/2025 +33 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-ggp9-c99x-54gp
Status: Confirmed

CVE: CVE-2025-64434 (🔒)
GCVE (CVE): GCVE-0-2025-64434
GCVE (VulDB): GCVE-100-331597
EUVD: 🔒

Entryinfo

Created: 11/08/2025 07:53
Updated: 12/11/2025 15:36
Changes: 11/08/2025 07:53 (66), 11/27/2025 05:34 (12), 11/28/2025 02:14 (1), 12/11/2025 15:36 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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