Patch tracker / KB5002645

KB5002645: Microsoft SharePoint Server 2019 Security Update (October 2024)

KB5002645 is a High security update for Microsoft SharePoint Server 2019, released 2024-10-08. It closes 1 CVE with a maximum CVSS of 7.8. It is the 34th largest of the 43 updates Microsoft shipped that month, by CVEs closed.

Update summary

High
2024-10-08
Released
1
CVEs fixed
7.8
Max CVSS v3
High
Severity
Deploy this cycle
Fixes 1 CVE for Microsoft SharePoint Server 2019. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 7.8 (High). EPSS exploit probability up to <1%. Among the lower half 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.

Microsoft Update Catalog: download KB5002645Microsoft support article
Senserva AI Opinion for KB5002645

KB5002645 fixes CVE-2024-43503, a High severity SharePoint flaw at CVSS 7.8, spanning SharePoint Enterprise Server 2016, SharePoint Server 2019, and the Subscription Edition. SharePoint vulnerabilities are consistently attractive to attackers because farms often host sensitive documents and are internet-facing in hybrid deployments.

Do this: Verify all SharePoint 2016, 2019, and Subscription Edition farms have KB5002645 applied given SharePoint's frequent attacker interest.

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

Senserva AI Opinion and rich prompt for KB5002645

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

Full tracking and change history for KB5002645

Released
2024-10-08
Last changed
2024-10-08
Changes tracked
1

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 KB5002645 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-2024-43503High7.8<1%No

Scope and sources

Affected products
Also released in October 2024

KB29166583

1 CVE · Critical · exploited

KB5044277

77 CVEs · Critical · exploited

KB5044281

65 CVEs · Critical · exploited

KB5044288

83 CVEs · Critical · exploited

KB5044293

56 CVEs · Critical · exploited

KB5044306

32 CVEs · Critical · exploited

KB5044320

32 CVEs · Critical · exploited

KB5044321

36 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5002645 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.