CVE-2026-84008: Microsoft .net Framework 3.5
High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.
Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
Affected products
- Microsoft Microsoft .net Framework 3.5
- Microsoft Microsoft .net Framework 3.5 And 4.6.2/4.7/4.7.1/4.7.2
- Microsoft Microsoft .net Framework 3.5 And 4.7.2
- Microsoft Microsoft .net Framework 3.5 And 4.8
- Microsoft Microsoft .net Framework 3.5 And 4.8.1
- Microsoft Microsoft .net Framework 4.6.2/4.7/4.7.1/4.7.2: from 4.7.0, before 4.7.4150.0 (fixed in 4.7.4150.0)
- Microsoft Microsoft .net Framework 4.8: from 4.8.0, before 4.8.4811.0 (fixed in 4.8.4811.0)
- Microsoft Microsoft .net Framework 4.8.1: from 4.8.0.0, before 4.8.9363.0 (fixed in 4.8.9363.0)
- Microsoft Microsoft Visual Studio 2022 Version 17.14: from 17.14.0, before 17.14.42 (fixed in 17.14.42)
- Microsoft Microsoft Visual Studio 2026 Version 18.10: from 18.10.0, before 18.10.4 (fixed in 18.10.4)
- Microsoft System.security.cryptography.pkcs: from 10.0.0, before 10.0.13 (fixed in 10.0.13)
Affected packages
Published 2026-10-13. Last modified 2026-10-13.