Microsoft .NET Framework 4.8.1 vulnerabilities

2 known vulnerabilities in Microsoft .NET Framework 4.8.1 from Microsoft. 2 are rated high or critical. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.

Latest first

• 8.8 High severity

  Microsoft .NET Framework 3.5 AND…: Access of Resource Using Incompatible Type

  CVE-2026-102869Oct 13, 2026Microsoft

  Access of resource using incompatible type ('type confusion') in .NET and Visual Studio allows an unauthorized attacker to elevate privileges over a network.

• 7.5 High severity

  Microsoft .NET Framework 3.5 AND 4.7.2: Loop with Unreachable Exit Condition

  CVE-2026-50647Jul 14, 2026MicrosoftEPSS 1.17%

  Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.