CVE-2026-40379

Azure Entra ID Spoofing Vulnerability

CVSS 9.3 CRITICALEPSS 0.9%CWE-200

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.3EPSS 0.9%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

12 May 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Exposure of sensitive information to an unauthorized actor in Azure Entra ID allows an unauthorized attacker to perform spoofing over a network.

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

Affected products

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References