Critical severity9.3NVD Advisory· Published May 12, 2026· Updated Jun 17, 2026
CVE-2026-40379
CVE-2026-40379
Description
Exposure of sensitive information to an unauthorized actor in Azure Entra ID allows an unauthorized attacker to perform spoofing over a network.
Affected products
2Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40379nvdVendor Advisory
News mentions
3- Microsoft Patches 138 Vulnerabilities, Including DNS and Netlogon RCE FlawsThe Hacker News · May 13, 2026
- Patch Tuesday - May 2026Rapid7 Blog · May 13, 2026
- May 2026 Patch Tuesday: 30 Critical Vulnerabilities Among 130 CVEsCrowdStrike Blog