CVE-2026-45591

CVE-2026-45591

Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Vulnerability class: DoS (Denial of Service)

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

secure@microsoft.com

Frequently asked questions

What is CVE-2026-45591?: CVE-2026-45591 is a high-severity vulnerability, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-06-09.
How severe is CVE-2026-45591?: High severity. CVSS v3 base score is 7.5 out of 10.