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KB5120702: what it fixes and who gets it

KB5120702 is a security update from Microsoft's August 2026 release for Microsoft .NET Framework 4.8 on Windows 10 Version 1607, Microsoft .NET Framework 4.8 on Windows Server 2016.

Microsoft data read
3CVEs fixed
0rated Critical
0already exploited
Norestart required

Should you install it?

Yes. It is a routine security update; none of its fixes are rated Critical or reported as exploited. Windows Update installs it automatically on supported home PCs.

If the installation fails or the PC misbehaves afterwards, note the exact error code first: the fix depends on it. Our update troubleshooting guides are linked on this page.

Security fixes in KB5120702

CVETypeCVSSSeverity
CVE-2026-62872.NET Framework Elevation of Privilege VulnerabilityElevation of Privilege8.8Important
CVE-2026-65810.NET Framework Elevation of Privilege VulnerabilityElevation of Privilege7.8Important
CVE-2026-70354.NET Core Remote Code Execution VulnerabilityRemote Code Execution7.8Important

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