🛡️ CVE-2026-42901 — entra-id

🔴 CVSS 10.0 — Critical ✅ No Known Exploit CWE-346 NVD
10.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-42901 is classified as CWE-346: Origin Validation Error. The origin of a message or request is not verified properly, so one source can pose as another.

Affected software

CVE-2026-42901 is recorded against 2 packages.

  • entra-id
  • unknown

Timeline and source

Published on 22 May 2026 and last revised on 23 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

msrc.microsoft.com

Details

Severity CRITICAL
CVSS Score 10.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE CWE-346
Public Exploit ✅ No
Source NVD
Published 2026-05-22
Updated 2026-08-11
Modified 2026-07-23
Fix URL N/A

Affected Packages

Software From version Fixed in
entra-id — —
unknown — —

Similar Threats

Exploit Protection

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CVE-2026-42901 carries CVSS 10.0 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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