What is CVE-2025-64434?

CVE-2025-64434 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. KubeVirt Improper TLS Certificate Management Handling Allows API Identity Spoofing

Which CVE IDs does CVE-2025-64434 cover?

CVE-2025-64434 covers the following CVE IDs: CVE-2025-64434. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-64434?

CVE-2025-64434 has a CVSS v3 base score of 4.7, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-64434?

CVE-2025-64434 affects 4 products, including: azl3 kubevirt 1.5.0-5 on Azure Linux 3.0; cbl2 kubevirt 0.59.0-30 on CBL Mariner 2.0; cbl2 kubevirt 0.59.0-31 on CBL Mariner 2.0; cbl2 kubevirt 0.59.0-33 on CBL Mariner 2.0.

CVE-2025-64434MediumCVSS 4.7

KubeVirt Improper TLS Certificate Management Handling Allows API Identity Spoofing

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-64434 →

🎯 Affected products4

azl3 kubevirt 1.5.0-5 on Azure Linux 3.0
cbl2 kubevirt 0.59.0-30 on CBL Mariner 2.0
cbl2 kubevirt 0.59.0-31 on CBL Mariner 2.0
cbl2 kubevirt 0.59.0-33 on CBL Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 1.5.3-2

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64434
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade