TI-2025-39847 Aliases CVE-2025-64434 GHSA-ggp9-c99x-54gp

KubeVirt Improper TLS Certificate Management Handling Allows API Identity Spoofing

MEDIUM 61CWE-287Published 2025-11-07 · Updated 2025-11-10

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · High
Fix status: Partial Red Hat: 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-287.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00198 9th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial kubevirt (kubevirt): 1.5.3, 1.6.1kubevirt.io/kubevirt (Go): 1.5.3, 1.6.1Red Hat: 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
kubevirt	kubevirt	before 1.5.3; 1.6.0-alpha.0 to before 1.6.1	1.5.3, 1.6.1	Patch available	CNA
—	kubevirt.io/kubevirt (Go)	before 1.5.3	1.5.3	Patch available	GHSA-ggp9-c99x-54gp
—	kubevirt.io/kubevirt (Go)	1.6.0-alpha.0 to before 1.6.1	1.6.1	Patch available	GHSA-ggp9-c99x-54gp

kubevirt Vendorkubevirt Affected before 1.5.3; 1.6.0-alpha.0 to before 1.6.1 Fixed in 1.5.3, 1.6.1 Patch available CNA
kubevirt.io/kubevirt (Go) Vendor— Affected before 1.5.3 Fixed in 1.5.3 Patch available GHSA-ggp9-c99x-54gp
kubevirt.io/kubevirt (Go) Vendor— Affected 1.6.0-alpha.0 to before 1.6.1 Fixed in 1.6.1 Patch available GHSA-ggp9-c99x-54gp

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:kubevirt:kubevirt::::::kubernetes::*	before 1.5.3	Vulnerable	kubevirt
cpe:2.3:a:kubevirt:kubevirt:1.6.0:::::kubernetes::	1.6.0	Vulnerable	kubevirt

cpe:2.3:a:kubevirt:kubevirt:*:*:*:*:*:kubernetes:*:* Versions before 1.5.3 Vulnerable ·kubevirt
cpe:2.3:a:kubevirt:kubevirt:1.6.0:*:*:*:*:kubernetes:*:* Versions 1.6.0 Vulnerable ·kubevirt

Remediation

Fix · CNA kubevirt (kubevirt) Fixed in 1.5.3, 1.6.1
Fix · GHSA-ggp9-c99x-54gp kubevirt.io/kubevirt (Go) Fixed in 1.5.3 Advisory →
Fix · GHSA-ggp9-c99x-54gp kubevirt.io/kubevirt (Go) Fixed in 1.6.1 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat OpenShift Virtualization 4	Affected	No fix yet: Fix deferred

Timeline

2026-10-02 Threatist record created from CVE-2025-64434
2026-10-03 Alias added: GHSA-ggp9-c99x-54gp

References

Exploit 1

https://github.com/kubevirt/kubevirt/security/advisories/GHSA-ggp9-c99x-54gp

Patch 3

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-64434

Other 1

https://github.com/kubevirt/kubevirt

TI-2025-39759 KubeVirt Vulnerable to Arbitrary Host File Read and Write CVSS 4.0HIGH 8.5
TI-2022-01664 Path Traversal vulnerability in Kubevirt CVSS 3.1HIGH 8.7
TI-2025-39849 KubeVirt Excessive Role Permissions Could Enable Unauthorized VMI Migrations Between Nodes CVSS 4.0MEDIUM 6.9
TI-2025-39846 KubeVirt Arbitrary Container File Read CVSS 3.1MEDIUM 6.5
TI-2025-39848 KubeVirt VMI Denial-of-Service (DoS) Using Pod Impersonation CVSS 3.1MEDIUM 5.3
TI-2025-39850 KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes CVSS 3.1MEDIUM 5.0

See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences