CVE-2026-40379

⛔ critical

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

CVSS Score

9.3

Critical

EPSS Score

0.1

Exploit Probability

Published Date

2026-05-12

First Seen: 2026-05-22

This CVE is High Risk - more severe than 88.6% of all 330,193 vulnerabilities in our database.

#37,637

Top 25% most severe

Severity Percentile

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

SSVC data provided by CISA

Last Modified 2026-05-21

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CWE IDs (Weakness Types)

CWE-200

📦 Affected Products 1

Vendor	Product	Status	Affected Versions
microsoft	entra_id	Affected	v-

Vendor Advisory

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-33843	⛔ critical	9.1	0.1	Authentication bypass using an alternate path or channel in Microsoft Azure Active Directory B2C allows an unauthorized ...	2026-05-22
CVE-2026-42901	⛔ critical	10.0	0.0	Origin validation error in Microsoft Entra ID allows an unauthorized attacker to elevate privileges over a network.	2026-05-22
CVE-2026-24305	⛔ critical	9.3	0.1	Azure Entra ID Elevation of Privilege Vulnerability	2026-01-22
CVE-2025-59218	⛔ critical	9.6	0.1	Azure Entra ID Elevation of Privilege Vulnerability	2025-10-09
CVE-2025-59246	⛔ critical	9.8	0.1	Azure Entra ID Elevation of Privilege Vulnerability	2025-10-09
CVE-2025-55241	⛔ critical	10.0	0.1	Azure Entra ID Elevation of Privilege Vulnerability	2025-09-04

These CVEs affect the same products