CVE-2026-47304: Microsoft .net

Critical severity, CVSS 9.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.

Affected products

• Microsoft .net: from 8.0.0, before 8.0.29 (fixed in 8.0.29); from 9.0.0, before 9.0.18 (fixed in 9.0.18); from 10.0.0, before 10.0.6 (fixed in 10.0.6)
• Microsoft .NET Framework: version 4.8.1 only; version 4.8 only; version 4.6.2 only; version 4.7 only; version 4.7.1 only; version 4.7.2 only; …
• Microsoft Visual Studio 2017: from 15.0, up to and including 15.9
• Microsoft Visual Studio 2019: from 16.0, up to and including 16.11
• Microsoft Visual Studio 2022: from 17.12.0, before 17.12.22 (fixed in 17.12.22); from 17.14.0, before 17.14.36 (fixed in 17.14.36)
• Microsoft Visual Studio 2026: from 18.7.0, before 18.7.4 (fixed in 18.7.4); version 18.5.0 only

Published 2026-07-14. Last modified 2026-07-24.