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. The most likely of them to be attacked is CVE-2026-20943, which FIRST.org rates at 32% probability of exploitation in the next 30 days.
Update summary
Fixes 7 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.8 (Critical). EPSS exploit probability up to 32%. Among the top 25% of tracked Microsoft updates by EPSS exploit probability.
A newer security update for Microsoft SharePoint Server 2019 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.
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
- Released
- 2026-01-13
- Last changed
- 2026-08-12
- Changes tracked
- 6
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 KB5002825 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-2026-20963 | Critical | 9.8 | 32% | KEV |
| CVE-2026-20947 | High | 8.8 | 32% | No |
| CVE-2026-20948 | High | 7.8 | 32% | No |
| CVE-2026-20951 | High | 7.8 | 32% | No |
| CVE-2026-20943 | High | 7.0 | 32% | No |
| CVE-2026-20958 | Medium | 5.4 | 32% | No |
| CVE-2026-20959 | Medium | 4.6 | 32% | No |
Scope and sources
- Affected products
- Also released in January 2026
KB5002822
6 CVEs · Critical · exploitedKB5002828
7 CVEs · Critical · exploitedKB5073379
86 CVEs · Critical · exploitedKB5073450
80 CVEs · Critical · exploitedKB5073455
80 CVEs · Critical · exploitedKB5073457
78 CVEs · Critical · exploitedKB5073722
54 CVEs · Critical · exploitedKB5073723
73 CVEs · Critical · exploitedThe full month, summarized: Microsoft Patch Tuesday.
- Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.