CVE-2026-32203: Microsoft .net

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.

Affected products

• Microsoft .net: from 10.0.0, before 10.0.6 (fixed in 10.0.6); from 8.0.0, before 8.0.26 (fixed in 8.0.26); from 9.0.0, before 9.0.15 (fixed in 9.0.15)
• Microsoft Visual Studio 2022: from 17.12.0, before 17.12.19 (fixed in 17.12.19); from 17.14.0, before 17.14.30 (fixed in 17.14.30)
• Microsoft Visual Studio 2026: from 18.4.0, before 18.4.4 (fixed in 18.4.4)

Published 2026-04-14. Last modified 2026-07-15.