# CVE-2026-40372

> Vulnerability · severity: **CRITICAL** (CVSS 9.1).

## Description

Improper verification of cryptographic signature in ASP.NET Core allows an unauthorized attacker to elevate privileges over a network.

## Key facts

- **CVE ID:** CVE-2026-40372
- **Published:** 2026-04-21
- **CVSS severity:** CRITICAL
- **CVSS base score:** 9.1
- **CWE codes:** CWE-347

## Affected products

- `microsoft:asp.net_core`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40372

## Citation

> AI Analytics. CVE-2026-40372. Retrieved 2026-07-09 from https://api.ai-analytics.org/cve/CVE-2026-40372. Derived from NIST NVD. Licensed CC0.

---

*[Dataset catalog](https://api.ai-analytics.org/datasets/) · [AI Analytics](https://api.ai-analytics.org/) · CC0 1.0*