What is CVE-2025-2296?

CVE-2025-2296 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Un-verified kernel bypass Secure Boot mechanism in direct boot mode

Which CVE IDs does CVE-2025-2296 cover?

CVE-2025-2296 covers the following CVE IDs: CVE-2025-2296. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-2296?

CVE-2025-2296 has a CVSS v3 base score of 8.2, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2025-2296?

CVE-2025-2296 affects 3 products, including: azl3 edk2 20240524git3e722403cd16-10 on Azure Linux 3.0; cbl2 edk2 20230301gitf80f052277c8-43 on CBL Mariner 2.0; cbl2 hvloader 1.0.1-14 on CBL Mariner 2.0.

CVE-2025-2296HighCVSS 8.2

Un-verified kernel bypass Secure Boot mechanism in direct boot mode

Vendor

Microsoft Security Response Center (MSRC)

Published

December 17, 2025

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-2296 →

🎯 Affected products3

azl3 edk2 20240524git3e722403cd16-10 on Azure Linux 3.0
cbl2 edk2 20230301gitf80f052277c8-43 on CBL Mariner 2.0
cbl2 hvloader 1.0.1-14 on CBL Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 20240524git3e722403cd16-11 KBCBL-Mariner Releases (Security Update) — fixed build 20230301gitf80f052277c8-44 KBCBL-Mariner Releases (Security Update) — fixed build 1.0.1-15

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-2296
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade