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CRITICAL · 10.0

CVE-2026-42901

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

Vulnerability Description

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

CVSS 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
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftEntra Id-

Related Weaknesses (CWE)

CWE-346

References

FAQ

What is CVE-2026-42901?

CVE-2026-42901 is a vulnerability with a CVSS score of 10.0 (CRITICAL). Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.

How severe is CVE-2026-42901?

CVE-2026-42901 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-42901?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Entra Id.