CVE-2026-42901

CRITICAL

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

CVSS v3.1 Score

10.0
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 5/22/2026Modified: 5/27/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-42901 — Origin validation error in Microsoft Entra ID allows an unauthorized attacker to...

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

CVE-2026-42901
NIST NVD

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42901Vendor Advisory