Patch tracker / KB5002809
KB5002809: Microsoft Office 2016 Security Update (November 2025)
KB5002809 is a High security update for Microsoft Office 2016, released 2025-11-11. It closes 1 CVE with a maximum CVSS of 7.8. Get it from the Microsoft Update Catalog below, and see where it sits against the rest of the month on the patch tracker.
Update summary
New to these terms? How the Microsoft patching tools fit together, this month's Patch Tuesday summary, and every update ranked by real-world risk.
Senserva AI Opinion for KB5002809
KB5002809 addresses CVE-2025-62199, a single High severity flaw (CVSS 7.8) in Microsoft Office 2016 (both 32-bit and 64-bit) and Office LTSC 2021 32-bit editions, released on 2025-11-11. Exposure is broad because it touches classic MSI-based Office installs still common in many organizations, though the EPSS score is only 1 percent and the CVE is not in CISA KEV or linked to ransomware. The 7.8 rating and Office attack surface point to a client-side vector where a user opening a crafted document could trigger code execution.
Do this: Deploy KB5002809 to all Office 2016 and Office LTSC 2021 32-bit and 64-bit endpoints, prioritizing systems where users routinely open documents from external sources.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5002809
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5002809
Senserva began recording day-to-day change history on 2026-07-07, and refreshes it several times a day. Release dates are historical where Microsoft publishes them; revision history is tracked from that date forward, so it does not include changes made before then.
Exploitation and severity
Fixes 1 CVE. Most severe CVSS 7.8 (High). EPSS exploit probability up to <1%.
Among the lower half of tracked Microsoft updates by EPSS exploit probability.
What to do
Moderate priority: schedule it in your normal patch cycle. Senserva flags whether KB5002809 is missing on your devices.
Check if KB5002809 is installed
Copy-paste PowerShell: one machine, or your whole estate in one pass. No output means the update is not installed.
Get-HotFix covers Windows updates. Office, SharePoint, and Exchange server updates show under installed updates in Programs and Features, or check the Update Catalog history.
CVEs fixed by this update
Sorted exploited-first, then by CVSS. Every CVE links to its Senserva page with the full risk facts, references, and a ready-to-paste AI prompt.
| CVE | Severity | CVSS | EPSS | Exploited |
|---|---|---|---|---|
| CVE-2025-62199 | High | 7.8 | <1% | No |
Affected products
Also released in November 2025
The highest-risk updates from the same release:
The full month, summarized: Microsoft Patch Tuesday.
Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.