Patch tracker / KB5002880
KB5002880: Microsoft SharePoint Server 2019 Security Update (July 2026)
KB5002880 is a Critical security update for Microsoft SharePoint Server 2019, released 2026-07-14. It closes 30 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-2026-58644, which FIRST.org rates at 35% probability of exploitation in the next 30 days.
Update summary
Fixes 30 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.8 (Critical). EPSS exploit probability up to 35%. Among the top 25% 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.
We checked Microsoft's support article for KB5002880 on 2026-08-11 and it lists no known issues. Read the article before broad deployment; Microsoft adds issues as reports come in, and we re-check on every refresh.
KB5002880 patches 30 CVEs across SharePoint Enterprise Server 2016, SharePoint Server 2019, and SharePoint Server Subscription Edition, topping out at Critical with a CVSS of 9.8 and one CVE already listed in CISA KEV. On-premises SharePoint farms are the exposed surface here, and the confirmed KEV listing means at least one of these flaws is being actively exploited in the wild. The highest EPSS of 27 percent underlines that near-term exploitation odds are non-trivial rather than theoretical.
Do this: Apply KB5002880 to all on-premises SharePoint 2016, 2019, and Subscription Edition servers now, prioritizing internet-facing farms given the CISA KEV listing.
AI-generated from public data, 2026-07-26. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5002880
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5002880
- Released
- 2026-07-14
- Last changed
- 2026-07-29
- 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 KB5002880 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-2026-58644 | Critical | 9.8 | 35% | KEV |
| CVE-2026-45485 | Critical | 9.8 | 35% | No |
| CVE-2026-45484 | High | 8.8 | 35% | No |
| CVE-2026-45456 | High | 8.4 | 35% | No |
| CVE-2026-45458 | High | 8.4 | 35% | No |
| CVE-2026-47298 | High | 8.0 | 35% | No |
| CVE-2026-44819 | High | 7.8 | 35% | No |
| CVE-2026-44824 | High | 7.8 | 35% | No |
| CVE-2026-45471 | High | 7.8 | 35% | No |
| CVE-2026-45475 | High | 7.8 | 35% | No |
| CVE-2026-45481 | High | 7.3 | 35% | No |
| CVE-2026-45454 | Medium | 6.5 | 35% | No |
| CVE-2026-44821 | Medium | 5.5 | 35% | No |
| CVE-2026-33113 | Medium | 5.4 | 35% | No |
| CVE-2026-45453 | Medium | 5.4 | 35% | No |
| CVE-2026-45464 | Medium | 5.4 | 35% | No |
| CVE-2026-45465 | Medium | 5.4 | 35% | No |
| CVE-2026-47636 | Medium | 5.4 | 35% | No |
| CVE-2026-47639 | Medium | 5.4 | 35% | No |
| CVE-2026-48560 | Medium | 5.4 | 35% | No |
| CVE-2026-45462 | Medium | 4.6 | 35% | No |
| CVE-2026-45467 | Medium | 4.6 | 35% | No |
| CVE-2026-45468 | Medium | 4.6 | 35% | No |
| CVE-2026-45479 | Medium | 4.6 | 35% | No |
| CVE-2026-45483 | Medium | 4.6 | 35% | No |
| CVE-2026-47637 | Medium | 4.6 | 35% | No |
| CVE-2026-47638 | Medium | 4.6 | 35% | No |
| CVE-2026-47640 | Medium | 4.6 | 35% | No |
| CVE-2026-47641 | Medium | 4.6 | 35% | No |
| CVE-2026-48562 | Medium | 4.6 | 35% | No |
Scope and sources
- Affected products
- Also released in July 2026
KB5099444
185 CVEs · Critical · exploitedKB5099445
174 CVEs · Critical · exploitedKB5099535
261 CVEs · Critical · exploitedKB5099536
389 CVEs · Critical · exploitedKB5099538
312 CVEs · Critical · exploitedKB5099539
314 CVEs · Critical · exploitedKB5099540
326 CVEs · Critical · exploitedKB5101649
383 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.