Patch tracker / KB5002779
KB5002779: Microsoft Office 2019 for 32-bit editi Security Update (September 2025)
KB5002779 is a High security update for Microsoft Office 2019 for 32-bit editi, released 2025-09-09. It closes 1 CVE with a maximum CVSS of 7.8. It is the 23rd largest of the 32 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 2019 for 32-bit editions has shipped since this one: KB5002755 (2026-08-11). 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.
KB5002779 is a September 2025 Office patch addressing a single High severity flaw (CVSS 7.8), CVE-2025-54908, affecting Office 2019 in both 32-bit and 64-bit editions plus Microsoft 365 Apps for Enterprise on 32-bit systems. The 1% EPSS and absence from CISA KEV mean active exploitation is not evident yet, but the 7.8 score points to a client-side issue where opening a crafted Office document could trigger code execution. Because this touches the everyday Office desktop apps your users run, it belongs in your standard client patch cycle.
Do this: Deploy KB5002779 to all Office 2019 and Microsoft 365 Apps for Enterprise clients through your normal update channel this cycle.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5002779
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5002779
- Released
- 2025-09-09
- Last changed
- 2025-09-09
- 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 KB5002779 is installed
Elevated PowerShell. No output means it is not installed.
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-2025-54908 | High | 7.8 | <1% | No |
Scope and sources
- Affected products
- Also released in September 2025
KB5002775
3 CVEs · HighKB5002778
3 CVEs · HighKB5002784
1 CVE · HighKB5065220
2 CVEs · HighKB5065221
2 CVEs · HighKB5065222
3 CVEs · HighKB5065223
3 CVEs · HighKB5065224
3 CVEs · 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.