Detections
Analytics

SCA: security update for kubevirt.io/kubevirt (GHSA-qw6q-3pgr-5cwq)

medium Tenable Self-Hosted Container Security Plugin ID 435982

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. Prior to 1.5.3 and 1.6.1, a vulnerability
 was discovered that allows a VM to read arbitrary files from the virt-launcher pod's file system. This
 issue stems from improper symlink handling when mounting PVC disks into a VM. Specifically, if a malicious
 user has full or partial control over the contents of a PVC, they can create a symbolic link that points
 to a file within the virt-launcher pod's file system. Since libvirt can treat regular files as block
 devices, any file on the pod's file system that is symlinked in this way can be mounted into the VM and
 subsequently read. Although a security mechanism exists where VMs are executed as an unprivileged user
 with UID 107 inside the virt-launcher container, limiting the scope of accessible resources, this
 restriction is bypassed due to a second vulnerability. The latter causes the ownership of any file
 intended for mounting to be changed to the unprivileged user with UID 107 prior to mounting. As a result,
 an attacker can gain access to and read arbitrary files located within the virt-launcher pod's file system
 or on a mounted PVC from within the guest VM. This vulnerability is fixed in 1.5.3 and 1.6.1.
 (CVE-2025-64433)

See Also

https://github.com/advisories/GHSA-qw6q-3pgr-5cwq

Plugin Details

Severity: Medium

ID: 435982

Version: Revision 1.10

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: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N

CVSS Score Source: CVE-2025-64433

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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-2025-64433

cwe: CWE-22