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. It is the fourth largest of the 18 updates Microsoft shipped that month, by CVEs closed.
Update summary
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.
A newer security update for Microsoft Office 2016 (32-bit edition) has shipped since this one: KB5002822 (2026-01-13). For cumulative update families the newer package includes these fixes, so installing that one is usually the shorter path. Verify against your own update rings before you skip this package.
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
- Released
- 2025-11-11
- Last changed
- 2025-11-11
- Changes tracked
- 1
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.
Check if KB5002809 is installed
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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 |
Scope and sources
- Affected products
- Also released in November 2025
KB5068400
1 CVE · HighKB5068401
1 CVE · HighKB5068402
1 CVE · HighKB5068403
1 CVE · HighKB5068404
1 CVE · HighKB5068405
1 CVE · HighKB5068406
1 CVE · HighKB5068407
1 CVE · HighThe full month, summarized: Microsoft Patch Tuesday.
- Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.