VDB
CVE-2026-40379
CVE-2026-40379
PUBLISHED
CVSS 9.300000190734863 CRITICAL
Exposure of sensitive information to an unauthorized actor in Azure Entra ID allows an unauthorized attacker to perform spoofing over a network.
EPSS 0.06% · 19.6th percentile
Risk Scores
CVSS 3.1
9.300000190734863
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
EPSS Score
0.06%
19.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Enterprise Security Token Service (ESTS) | -, -, - |
| microsoft | azure_enterprise_security_token_service | -, -, * |
Timeline
- May 9, 2026 PoC Published
- May 12, 2026 PoC Published
- May 12, 2026 PoC Published
- May 12, 2026 CVE Published
- May 13, 2026 PoC Published
- May 13, 2026 CVE Updated
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score