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KB5002880: what it fixes and who gets it

KB5002880 is a security update from Microsoft's July 2026 release for Microsoft SharePoint Enterprise Server 2016.

Microsoft data read
1CVEs fixed
1rated Critical
1already exploited
Norestart required

Should you install it?

Yes, and soon: it closes a hole that was already being used in real attacks before the fix was released. 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 KB5002880

CVETypeCVSSSeverity
CVE-2026-58644Microsoft SharePoint Remote Code Execution VulnerabilityRemote Code Execution9.8ExploitedCritical

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