High [CVE-2026-65810] .NET Framework Elevation of Privilege Vulnerability
This high-severity Microsoft Server advisory covers CVE-2026-65810 affecting Microsoft .NET Framework 4.8 on Windows Server 2016, Microsoft .NET Framework 4.8 on Windows Server 2012 R2, Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019.
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Summary
.NET Framework Elevation of Privilege Vulnerability
Affected products named by the advisory: Microsoft.NET Framework 4.8 on Windows Server 2016; Microsoft.NET Framework 4.8 on Windows Server 2012; Microsoft.NET Framework 4.8 on Windows Server 2012 R2; Microsoft.NET Framework 3.5 AND 4.8 on Windows Server 2019; and 4 more.
Affected products named by the advisory: Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022; Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019; Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016; Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 56 minutes ago·verify at source
- KB5120711 (build 4.8.9344.0)
- KB5120747 (build 2.0.50727.9183 & 3.0.30729.9169)
- KB5120702 (build 4.8.4805.0)
- KB5120704 (build 4.8.4805.0)
- KB5120706 (build 4.8.4805.0)
- KB5120703 (build 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0)
- KB5120705 (build 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0)
- KB5120701 (build 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0)
Official advisory · high-confidence parse· fetched 56 minutes ago·verify at source
Mitigation checklist
- Install the applicable security update for your platform: KB5120711, KB5120747, KB5120702, KB5120704, KB5120706, KB5120703 (see the Microsoft Update Catalog).
Official advisory · high-confidence parse· fetched 56 minutes ago·verify at source
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