CVE-2026-40372
ASP.NET Core Elevation of Privilege Vulnerability
At a glance
- Severity
- CRITICAL 9.1
- EPSS
- EPSS 11.21 % · percentile 96 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Modified
Description
Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.
Scores
| Version | Score | Vector | Scored by |
|---|
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C | microsoft |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | redhat-SADP |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | NVD · secure@microsoft.com (Secondary) |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
Weaknesses (CWE)
Advisories
- GHSA-9mv3-2cwr-p262 — Microsoft Security Advisory CVE-2026-40372 – ASP.NET Core Elevation of Privilege
European references
CERT-FR advisories
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:* ≥ 10.0.0 < 10.0.7
Affected products
References
Sources
