BaseFortify

Publication date: 2025-11-07

Last updated on: 2025-11-25

Assigner: GitHub, Inc.

Description

KubeVirt is a virtual machine management add-on for Kubernetes. In 1.5.0 and earlier, the permissions granted to the virt-handler service account, such as the ability to update VMI and patch nodes, could be abused to force a VMI migration to an attacker-controlled node. This vulnerability could otherwise allow an attacker to mark all nodes as unschedulable, potentially forcing the migration or creation of privileged pods onto a compromised node.

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Meta Information

Published

2025-11-07

Last Modified

2025-11-25

Generated

2026-07-07

AI Q&A

2025-11-08

EPSS Evaluated

2026-07-05

NVD

CVE-2025-64436

Affected Vendors & Products

Vendor	Product	Version / Range
kubevirt	kubevirt	to 1.5.3 (inc)
kubevirt	kubevirt	From 1.6.0 (inc) to 1.6.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-269	The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
CWE-276	During installation, installed file permissions are set to allow anyone to modify those files.

Attack-Flow Graph

Executive Summary

This vulnerability in KubeVirt versions 1.5.0 and earlier involves excessive permissions granted to the virt-handler service account. These permissions, such as updating Virtual Machine Instances (VMI) and patching nodes, can be exploited by an attacker to force a VMI migration to a node controlled by the attacker. Additionally, the attacker could mark all nodes as unschedulable, potentially forcing migration or creation of privileged pods onto a compromised node.

Impact Analysis

The vulnerability can allow an attacker to manipulate the scheduling and migration of virtual machines within a Kubernetes cluster, potentially directing workloads to attacker-controlled or compromised nodes. This could lead to unauthorized access, privilege escalation, or disruption of services by forcing privileged pods onto compromised nodes.

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