CVE-2026-42901 CRITICAL

CVE-2026-42901: Microsoft Entra ID Elevation of Privilege Vulnerability

Vendor Microsoft
Product Microsoft Entra
Weakness CWE-346 · Origin validation
Published May 22, 2026
Last update June 9, 2026
View on NVD All CVEs

CVSS base score

10.0/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

May 22, 2026 CVE published
June 9, 2026 Record updated