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The Update Bureau
Office Online Server OOS Office Online Server Security update
Patch Tuesday

KB5002690

KB5002690: Cumulative update for Office Online Server, version OOS, March 2025. Excel flaw that could let attackers run code remotely is fixed

In short

Fixes three Important-severity vulnerabilities. It addresses an Excel flaw that could let an attacker run code remotely.

Does it affect you? Applies to: Office Online Server installations with the release version installed. The update package is for x64 systems.

Build
16.0.10416.20073
Security
3 fixed
Restart
Required

What changes

Fix 1 change

Microsoft Excel

Verified in package

For: Office Online Server administrators

  • An Excel flaw that could let an attacker run code remotely is addressed.1
    Resolves a Microsoft Excel remote code execution vulnerability.

Technical details

Data sheet · Security · Downloads · Components Click to collapse or expand

Data sheet

Released
2025-03-11
Classification
Security Updates
Type
Cumulative update
Restart
Required
Replaces
KB5002679, KB5002677, KB5002648, KB5002601, KB5002503
Replaced by
KB5002699
VersionBuildChannel
OOS 16.0.10416.20073 General availability

Security

3 vulnerabilities fixed
3 important
VulnerabilitySeverityCVSS
CVE-2025-24075
Microsoft Excel Remote Code Execution Vulnerability
 Important 7.8
CVE-2025-24081
Microsoft Excel Remote Code Execution Vulnerability
 Important 7.8
CVE-2025-24082
Microsoft Excel Remote Code Execution Vulnerability
 Important 7.8

Downloads (Microsoft Update Catalog)

Package OOS
1.0 GB
wacserver-x-none.cab Main update · KB5002690 SHA-1: d1db0227…155c1b

Updated components

1,601 files changed since the previous update for the same versions.

Top changed componentsFiles
Office web apps369
PowerPoint324
Excel261
Document conversion74
Word50

Verified in package: changed files confirm Microsoft Excel.

Sources

Updated
Cited passages from Microsoft's official notes (1)
  1. 1. This security update resolves a Microsoft Excel remote code execution vulnerability. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 1 quoted passage · compared with Microsoft's page on Oct 20, 2026
  • Quotes found in the official pages: passed
  • Numbers found in the sources: passed
  • Vulnerabilities from the dossier only: passed
  • Links to allowed domains only: passed
  • Every official change covered: passed
  • Readable plain text: passed
  • Changes confirmed by the file list: passed
  • Sources agree: passed

A second AI read the text against the sources: correctness 5/5, clarity 5/5, completeness 5/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake