Patch tracker / KB5002784
KB5002784: Microsoft SharePoint Server 2019 Security Update (September 2025)
KB5002784 is a High security update for Microsoft SharePoint Server 2019, released 2025-09-09. It closes 1 CVE with a maximum CVSS of 8.8. The most likely of them to be attacked is CVE-2025-54897, which FIRST.org rates at 19% probability of exploitation in the next 30 days.
Update summary
Fixes 1 CVE. Most severe CVSS 8.8 (High). EPSS exploit probability up to 19%. Among the top half of tracked Microsoft updates by EPSS exploit probability.
A newer security update for Microsoft SharePoint Enterprise Server 2016 has shipped since this one: KB5002882 (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.
KB5002784 patches CVE-2025-54897, a single High severity flaw (CVSS 8.8) affecting the on-premises SharePoint family: Enterprise Server 2016, Server 2019, and Subscription Edition. The 18% EPSS puts it above most freshly disclosed CVEs for likely exploitation, though it is not yet in CISA KEV or linked to ransomware. Internet-facing SharePoint farms are the primary concern given the high CVSS and remote reach implied by that score.
Do this: Apply KB5002784 to all SharePoint 2016, 2019, and Subscription Edition servers, prioritizing any farm reachable from the internet.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5002784
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5002784
- Released
- 2025-09-09
- Last changed
- 2026-08-10
- Changes tracked
- 4
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 KB5002784 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-2025-54897 | High | 8.8 | 19% | No |
Scope and sources
- Affected products
- Also released in September 2025
KB5002775
3 CVEs · HighKB5002778
3 CVEs · HighKB5065220
2 CVEs · HighKB5065221
2 CVEs · HighKB5065222
3 CVEs · HighKB5065223
3 CVEs · HighKB5065224
3 CVEs · HighKB5065225
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.