Patch tracker / KB5002905

KB5002905: Microsoft SharePoint Server 2019 Security Update (August 2026)

KB5002905 is a Critical security update for Microsoft SharePoint Server 2019, released 2026-08-11. It closes 23 CVEs with a maximum CVSS of 9.3. The most likely of them to be attacked is CVE-2026-70306, which FIRST.org rates at 85% probability of exploitation in the next 30 days.

Update summary

Critical
2026-08-11
Released
23
CVEs fixed
9.3
Max CVSS v3
Critical
Severity
Deploy this cycle
Fixes 23 CVEs for Microsoft SharePoint Server 2019. No confirmed in-the-wild exploitation in this set today.

Fixes 23 CVEs. Most severe CVSS 9.3 (Critical). EPSS exploit probability up to 2.9%. 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 KB5002905 on 2026-08-26 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 KB5002905Microsoft support article
Senserva AI Opinion and rich prompt for KB5002905

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

Full tracking and change history for KB5002905

Released
2026-08-11
Last changed
2026-08-24
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 KB5002905 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.

CVESeverityCVSSEPSSExploited
CVE-2026-62917Critical9.32.9%No
CVE-2026-64897Critical9.32.9%No
CVE-2026-64902Critical9.32.9%No
CVE-2026-64916Critical9.32.9%No
CVE-2026-64922Critical9.32.9%No
CVE-2026-70306Critical9.385%No
CVE-2026-62827High8.82.9%No
CVE-2026-63514High8.82.9%No
CVE-2026-64901High8.82.9%No
CVE-2026-64921High8.82.9%No
CVE-2026-65658High8.82.9%No
CVE-2026-65660High8.82.9%No
CVE-2026-65663High8.82.9%No
CVE-2026-66805High8.82.9%No
CVE-2026-66808High8.82.9%No
CVE-2026-70324High8.82.9%No
CVE-2026-63520High8.12.9%No
CVE-2026-64900High7.32.9%No
CVE-2026-58639Medium6.52.9%No
CVE-2026-62837Medium6.52.9%No
CVE-2026-62839Medium6.52.9%No
CVE-2026-63512Medium6.52.9%No
CVE-2026-63516Medium6.52.9%No

What the press says about this update

Trusted-source coverage of the CVEs this update fixes, pulled live from their own feeds.

“Rapid7 Analysis: Microsoft SharePoint Remote Code Execution (CVE-2026-63520)” Rapid7, 2026-08-24
“CVE-2026-63520: Microsoft SharePoint Remote Code Execution (FIXED)” Rapid7, 2026-08-11
“Patch Tuesday - August 2026” Rapid7, 2026-08-11

Scope and sources

Affected products
Also released in August 2026

KB5002882

39 CVEs · Critical · exploited

KB5002883

40 CVEs · Critical · exploited

KB5002891

40 CVEs · Critical · exploited

KB5120228

215 CVEs · Critical · exploited

KB5120229

195 CVEs · Critical · exploited

KB5120233

215 CVEs · Critical · exploited

KB5120238

183 CVEs · Critical · exploited

KB5120240

171 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5002905 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.
Provided as is, without warranty; verify against the vendor advisory before acting. Data notice and terms.