Patch tracker / KB5002825
KB5002825: Microsoft SharePoint Server 2019 Security Update (January 2026)
KB5002825 is a Critical security update for Microsoft SharePoint Server 2019, released 2026-01-13. It closes 7 CVEs with a maximum CVSS of 9.8. At least one of them is actively exploited (CISA KEV), so this is a deploy-first update. 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 KB5002825
KB5002825 patches 7 vulnerabilities across SharePoint Server 2019 and Office 2016 (both 32-bit and 64-bit), including one rated Critical at CVSS 9.8. One of these CVEs is already listed in the CISA KEV catalog, meaning it has been exploited in the wild, though none are currently tied to ransomware. The highest EPSS score of 23% signals meaningful near-term exploitation probability for a public-facing SharePoint deployment.
Do this: Prioritize patching your internet-facing SharePoint Server 2019 instances with KB5002825 first, since a known-exploited CVE is included in this release.
AI-generated from public data, 2026-07-26. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5002825
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5002825
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 7 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.8 (Critical). EPSS exploit probability up to 31%.
Among the top 25% of tracked Microsoft updates by EPSS exploit probability.
What to do
Treat as urgent: it is being exploited in the wild (CISA KEV), so patch ahead of items that are not. Senserva flags whether KB5002825 is missing on your devices.
Check if KB5002825 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-2026-20963 | Critical | 9.8 | 31% | KEV |
| CVE-2026-20943 | Critical | 9.8 | 31% | No |
| CVE-2026-20947 | Critical | 9.8 | 31% | No |
| CVE-2026-20948 | Critical | 9.8 | 31% | No |
| CVE-2026-20951 | Critical | 9.8 | 31% | No |
| CVE-2026-20958 | Critical | 9.8 | 31% | No |
| CVE-2026-20959 | Critical | 9.8 | 31% | No |
Affected products
Also released in January 2026
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.