What is CVE-2026-42901?

CVE-2026-42901 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Microsoft Entra ID Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-42901 cover?

CVE-2026-42901 covers the following CVE IDs: CVE-2026-42901. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-42901?

CVE-2026-42901 has a CVSS v3 base score of 10.0, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-42901?

CVE-2026-42901 affects 1 product, including: Microsoft Entra ID.

CVE-2026-42901CriticalCVSS 10.0

Microsoft Entra ID Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 22, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-42901 →

📋 Description

Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.

🎯 Affected products1

Microsoft Entra ID

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42901