Detections
Analytics
SCA: security update for kubevirt.io/kubevirt (GHSA-38jw-g2qx-4286)
medium Tenable Self-Hosted Container Security Plugin ID 435958
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- KubeVirt is a virtual machine management add-on for Kubernetes. Versions 1.5.3 and below, and 1.6.0
contained a flawed implementation of the Kubernetes aggregation layer's authentication flow which could
enable bypass of RBAC controls. It was discovered that the virt-api component fails to correctly
authenticate the client when receiving API requests over mTLS. In particular, it fails to validate the CN
(Common Name) field in the received client TLS certificates against the set of allowed values defined in
the extension-apiserver-authentication configmap. Failre to validate certain fields in the client TLS
certificate may allow an attacker to bypass existing RBAC controls by directly communicating with the
aggregated API server, impersonating the Kubernetes API server and its aggregator component. This issue is
fixed in versions 1.5.3 and 1.6.1. (CVE-2025-64432)
See Also
Plugin Details
Severity: Medium
ID: 435958
Version: Revision 1.16
Type: Local
Family: SCA Checks
Published: 11/7/2025
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.67
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: Low
Base Score: 3.8
Temporal Score: 3
Vector: CVSS2#AV:L/AC:H/Au:S/C:N/I:N/A:C
CVSS Score Source: CVE-2025-64432
CVSS v3
Risk Factor: Medium
Base Score: 4.7
Temporal Score: 4.2
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/6/2025
Vulnerability Publication Date: 11/6/2025
Reference Information
CVE: CVE-2025-64432