CVE-2026-26131: Microsoft .net

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Incorrect default permissions in .NET allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft .net: from 10.0.0, before 10.0.4 (fixed in 10.0.4)

Published 2026-03-10. Last modified 2026-06-17.