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KB5002928: what it fixes and who gets it

KB5002928 is a security update from Microsoft's October 2026 release for Office Online Server.

Microsoft data read
44CVEs fixed
13rated Critical
0already exploited
Norestart required

Should you install it?

Yes. It closes holes Microsoft rates Critical, the most serious rating it uses. 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 KB5002928

CVETypeCVSSSeverity
CVE-2026-100210Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-105718Microsoft Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97739Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97742Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97753Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97755Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97756Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97758Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97765Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97767Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97776Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97778Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-97780Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Critical
CVE-2026-100212Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-108446Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97003Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97004Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97007Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97008Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97010Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97017Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97738Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97746Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97747Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97748Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97750Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97751Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97752Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97754Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97757Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97762Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97763Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97766Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97768Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97769Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97770Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97771Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97772Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97773Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97775Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97777Microsoft Office Excel Remote Code Execution VulnerabilityRemote Code Execution8.8Important
CVE-2026-97740Microsoft Office Excel Information Disclosure VulnerabilityInformation Disclosure6.5Important
CVE-2026-97760Microsoft Office Excel Information Disclosure VulnerabilityInformation Disclosure6.5Important
CVE-2026-97779Microsoft Office Excel Information Disclosure VulnerabilityInformation Disclosure6.5Important

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