Patch tracker / KB5002874

KB5002874: Microsoft SharePoint Server 2019 Security Update (July 2026)

KB5002874 is a Critical security update for Microsoft SharePoint Server 2019, released 2026-07-14. It closes 31 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

CriticalCISA KEV
2026-07-14
Released
31
CVEs fixed
9.8
Max CVSS
Critical
Severity
Deploy now
This update fixes vulnerabilities confirmed exploited in the wild.

Fixes 31 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.

Senserva found thiswe track every release for this product line, so we can tell you this package is behind

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.

Senserva found thisno known issues as of our last check

We checked Microsoft's support article for KB5002874 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.

Microsoft Update Catalog: download KB5002874Microsoft support article
Senserva AI Opinion for KB5002874

KB5002874 patches 31 CVEs across on-premises SharePoint 2016, 2019, and Subscription Edition, topped by a Critical CVSS 9.8 flaw, and at least one of these CVEs is already listed in the CISA KEV catalog as actively exploited. SharePoint servers are typically internet-reachable collaboration hubs holding sensitive documents, so a confirmed-exploited critical bug on this footprint is a live risk despite the modest 27 percent EPSS.

Do this: Apply KB5002874 to all on-premises SharePoint 2016, 2019, and Subscription Edition farms now, prioritizing the CISA KEV-listed CVE on any internet-facing servers.

AI-generated from public data, 2026-07-26. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for KB5002874

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

Full tracking and change history for KB5002874

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 KB5002874 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-2026-58644Critical9.835%KEV
CVE-2026-45485Critical9.835%No
CVE-2026-45484High8.835%No
CVE-2026-45456High8.435%No
CVE-2026-45458High8.435%No
CVE-2026-47298High8.035%No
CVE-2026-44819High7.835%No
CVE-2026-44824High7.835%No
CVE-2026-45471High7.835%No
CVE-2026-45475High7.835%No
CVE-2026-45481High7.335%No
CVE-2026-47634High7.335%No
CVE-2026-45454Medium6.535%No
CVE-2026-44821Medium5.535%No
CVE-2026-33113Medium5.435%No
CVE-2026-45453Medium5.435%No
CVE-2026-45464Medium5.435%No
CVE-2026-45465Medium5.435%No
CVE-2026-47636Medium5.435%No
CVE-2026-47639Medium5.435%No
CVE-2026-48560Medium5.435%No
CVE-2026-45462Medium4.635%No
CVE-2026-45467Medium4.635%No
CVE-2026-45468Medium4.635%No
CVE-2026-45479Medium4.635%No
CVE-2026-45483Medium4.635%No
CVE-2026-47637Medium4.635%No
CVE-2026-47638Medium4.635%No
CVE-2026-47640Medium4.635%No
CVE-2026-47641Medium4.635%No
CVE-2026-48562Medium4.635%No

Scope and sources

Affected products
Also released in July 2026

KB5099444

185 CVEs · Critical · exploited

KB5099445

174 CVEs · Critical · exploited

KB5099535

261 CVEs · Critical · exploited

KB5099536

389 CVEs · Critical · exploited

KB5099538

312 CVEs · Critical · exploited

KB5099539

314 CVEs · Critical · exploited

KB5099540

326 CVEs · Critical · exploited

KB5101649

383 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5002874 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.