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October 14, 2025-KB5066738 Cumulative Update for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10, version 1809 and Windows Server 2019

🗓️ 14 Oct 2025 14:00:00Reported by MicrosoftType 
mskb
 mskb🔗 support.microsoft.com👁 80 Views

Security update for Dotnet Framework 3.5, 4.7.2 and 4.8 on Windows 10 1809 and Server 2019 addressing CVE-2025-21176.

Related
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Family
Tenable Nessus		Amazon Linux 2023 : aspnetcore-runtime-8.0, aspnetcore-runtime-dbg-8.0, aspnetcore-targeting-pack-8.0 (ALAS2023-2025-1230)
23 Oct 202500:00
–nessus
Tenable Nessus		Amazon Linux 2023 : aspnetcore-runtime-9.0, aspnetcore-runtime-dbg-9.0, aspnetcore-targeting-pack-9.0 (ALAS2023-2025-1231)
23 Oct 202500:00
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Tenable Nessus		Amazon Linux 2023 : aspnetcore-runtime-8.0, aspnetcore-runtime-dbg-8.0, aspnetcore-targeting-pack-8.0 (ALAS2023-2025-844)
26 Feb 202500:00
–nessus
Tenable Nessus		AlmaLinux 8 : .NET 8.0 (ALSA-2025:0381)
18 Jan 202500:00
–nessus
Tenable Nessus		AlmaLinux 8 : .NET 9.0 (ALSA-2025:0382)
18 Jan 202500:00
–nessus
Tenable Nessus		AlmaLinux 8 : .NET 8.0 (ALSA-2025:18148)
21 Oct 202500:00
–nessus
Tenable Nessus		AlmaLinux 9 : .NET 8.0 (ALSA-2025:18149)
21 Oct 202500:00
–nessus
Tenable Nessus		AlmaLinux 8 : .NET 9.0 (ALSA-2025:18150)
3 Nov 202500:00
–nessus
Tenable Nessus		AlmaLinux 9 : .NET 9.0 (ALSA-2025:18151)
3 Nov 202500:00
–nessus
Tenable Nessus		AlmaLinux 10 : .NET 8.0 (ALSA-2025:18152)
3 Nov 202500:00
–nessus
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14 Oct 2025 14:00Current
9.9High risk
Vulners AI Score9.9
CVSS 3.15.7 - 8.8
EPSS0.01411
SSVC
Dotnet Framework 3.5Dotnet Framework 4.7.2Dotnet Framework 4.8Windows tenServer 2019Remote code execution
80