Patch tracker / KB5002894

KB5002894: Microsoft SharePoint Server 2019 Security Update (August 2026)

KB5002894 is a Critical security update for Microsoft SharePoint Server 2019, released 2026-08-11. It closes 27 CVEs with a maximum CVSS of 9.3. At least one of them is actively exploited (CISA KEV), so this is a deploy-first update. It is the 16th largest of the 65 updates Microsoft shipped that month, by CVEs closed.

Update summary

CriticalCISA KEV
2026-08-11
Released
27
CVEs fixed
9.3
Max CVSS v3
Critical
Severity
Deploy now
This update fixes vulnerabilities confirmed exploited in the wild.

Fixes 27 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 9.3 (Critical). EPSS exploit probability up to 2.1%. Among the top half of tracked Microsoft updates by EPSS exploit probability.

Senserva found thisno known issues as of our last check

We checked Microsoft's support article for KB5002894 on 2026-10-11 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.

Microsoft Update Catalog: download KB5002894Microsoft support article
Senserva AI Opinion and rich prompt for KB5002894

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for KB5002894

Released
2026-08-11
Last changed
2026-09-26
Changes tracked
7

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 KB5002894 is installed

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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.

CVESeverityCVSSEPSSExploited
CVE-2026-65660High8.82.1%KEV
CVE-2026-58639Critical9.32.1%No
CVE-2026-62829Critical9.32.1%No
CVE-2026-62837Critical9.32.1%No
CVE-2026-62839Critical9.32.1%No
CVE-2026-62917Critical9.32.1%No
CVE-2026-63512Critical9.32.1%No
CVE-2026-63516Critical9.32.1%No
CVE-2026-64897Critical9.32.1%No
CVE-2026-64902Critical9.32.1%No
CVE-2026-64916Critical9.32.1%No
CVE-2026-64922Critical9.32.1%No
CVE-2026-70306Critical9.32.1%No
CVE-2026-62827High8.82.1%No
CVE-2026-63514High8.82.1%No
CVE-2026-64901High8.82.1%No
CVE-2026-64921High8.82.1%No
CVE-2026-65658High8.82.1%No
CVE-2026-65663High8.82.1%No
CVE-2026-65665High8.82.1%No
CVE-2026-66805High8.82.1%No
CVE-2026-66808High8.82.1%No
CVE-2026-70324High8.82.1%No
CVE-2026-63520High8.12.1%No
CVE-2026-57105High8.02.1%No
CVE-2026-64900High7.32.1%No
CVE-2026-70355High7.32.1%No

Scope and sources

Affected products
Also released in August 2026

KB5120228

215 CVEs · Critical · exploited

KB5120229

195 CVEs · Critical · exploited

KB5120233

215 CVEs · Critical · exploited

KB5120238

183 CVEs · Critical · exploited

KB5120240

170 CVEs · Critical · exploited

KB5120242

195 CVEs · Critical · exploited

KB5120385

144 CVEs · Critical · exploited

KB5120386

139 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5002894 page (Microsoft Support)Microsoft Update CatalogMicrosoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
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