Patch tracker / KB5002836
KB5002836: Microsoft SharePoint Server 2019 Security Update (February 2026)
KB5002836 is a High security update for Microsoft SharePoint Server 2019, released 2026-02-10. It closes 2 CVEs with a maximum CVSS of 7.5. 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 KB5002836
KB5002836 patches two CVEs across SharePoint Enterprise Server 2016, SharePoint Server 2019, and Office 2019 for 32-bit editions, with a High severity rating at CVSS 7.5. On-premises SharePoint farms are the primary exposure since these servers often sit accessible to internal users and sometimes external ones. Neither CVE-2026-21260 nor CVE-2026-21511 is in the CISA KEV catalog and EPSS remains low at 4 percent, so this is a plan-and-schedule fix rather than an emergency.
Do this: Schedule this update into your next SharePoint on-premises patch window and confirm the shared Office 2019 32-bit component is covered on any affected servers.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5002836
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5002836
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 2 CVEs. Most severe CVSS 7.5 (High). EPSS exploit probability up to 3.6%.
Among the top half of tracked Microsoft updates by EPSS exploit probability.
What to do
Moderate priority: schedule it in your normal patch cycle. Senserva flags whether KB5002836 is missing on your devices.
Check if KB5002836 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-2026-21260 | High | 7.5 | 3.6% | No |
| CVE-2026-21511 | High | 7.5 | 3.6% | No |
Affected products
Also released in February 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.