CVE-2025-55248HighCVSS 4.8

.NET, .NET Framework, and Visual Studio Information Disclosure Vulnerability

Published
October 14, 2025
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2025-55248 →

📋 Description

Inadequate encryption strength in .NET, .NET Framework, Visual Studio allows an authorized attacker to disclose information over a network.

🎯 Affected products78

  • .NET 8.0 installed on Linux
  • .NET 8.0 installed on Mac OS
  • .NET 8.0 installed on Windows
  • .NET 9.0 installed on Linux
  • .NET 9.0 installed on Mac OS
  • .NET 9.0 installed on Windows
  • Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
  • Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
  • Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
  • Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1607 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2016 (Server Core installation)
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation)
  • +48 more not shown

✅ Remediation

KB5066136 (Security Update) — fixed build 4.8.04798.02 KB5066739 (Monthly Rollup) — fixed build 4.8.04798.02 KB5066740 (Monthly Rollup) — fixed build 4.8.04798.04 KB5066741 (Monthly Rollup) — fixed build 4.8.04798.04 KB5066738 (Security Update) — fixed build 4.8.04798.02 KB5066743 (Security Update) — fixed build 4.8.04798.04 KB5066746 (Security Update) — fixed build 4.8.04798.04 KB5066747 (Security Update) — fixed build 4.8.04798.04 KB5066738 (Security Update) — fixed build 4.7.04137.03 KB5066836 (Security Update) — fixed build 10.0.14393.8519 KB5066742 (Monthly Rollup) — fixed build 4.7.04137.03 KB5066740 (Monthly Rollup) — fixed build 4.7.04137.06 KB5066741 (Monthly Rollup) — fixed build 4.7.04137.03 KB5066743 (Security Update) — fixed build 4.8.1.09320.02 KB5066746 (Security Update) — fixed build 4.8.1.09320.02 KB5066133 (Security Update) — fixed build 4.8.1.09321.01 KB5066747 (Security Update) — fixed build 4.8.1.09320.02 KB5066129 (Security Update) — fixed build 4.8.1.09321.01 KB5066131 (Security Update) — fixed build 4.8.1.09321.01 KB5066742 (Monthly Rollup) — fixed build 2.0.50727.8981 KB5066740 (Monthly Rollup) — fixed build 2.0.50727.8981 KB5066741 (Monthly Rollup) — fixed build 2.0.50727.8981 KB5066739 (Monthly Rollup) — fixed build 2.0.50727.8981 KB5066128 (Security Update) — fixed build 4.8.1.09321.01 KB5066128 (Monthly Rollup) — fixed build 4.8.1.09321.01 KB5068331 (Security Update) — fixed build 8.0.21 KB5068332 (Security Update) — fixed build 9.0.10 KBRelease Notes (Security Update) — fixed build 17.12.13 KBRelease Notes (Security Update) — fixed build 17.10.20 KBRelease Notes (Security Update) — fixed build 17.14.17

🔗 References (46)