Patch tracker / KB5002815

KB5002815: Microsoft SharePoint Server Subscripti Security Update (December 2025)

KB5002815 is a High security update for Microsoft SharePoint Server Subscripti, released 2025-12-09. It closes 1 CVE with a maximum CVSS of 8.8. It is the 52nd largest of the 59 updates Microsoft shipped that month, by CVEs closed.

Update summary

High
2025-12-09
Released
1
CVEs fixed
8.8
Max CVSS v3
High
Severity
Deploy this cycle
Fixes 1 CVE for Microsoft SharePoint Server Subscripti. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 8.8 (High). EPSS exploit probability up to 1.0%. 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 Server Subscription Edition 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 KB5002815Microsoft support article
Senserva AI Opinion for KB5002815

KB5002815 patches a single flaw, CVE-2025-64672, in SharePoint Server Subscription Edition rated High severity at CVSS 8.8. Anyone running an on-premises SharePoint Subscription Edition farm is exposed, and the high CVSS score reflects a serious impact even though EPSS sits at 1 percent and it is not in the CISA KEV catalog. SharePoint servers are frequent targets because they hold document libraries and often trust internal identities, so a fix here deserves prompt attention.

Do this: Apply KB5002815 to all SharePoint Server Subscription Edition servers in your farm and run the required post-installation upgrade steps.

AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for KB5002815

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

Full tracking and change history for KB5002815

Released
2025-12-09
Last changed
2026-07-08
Changes tracked
2

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 KB5002815 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-2025-64672High8.81.0%No

Scope and sources

Affected products
Also released in December 2025

KB5066586

98 CVEs · Critical · exploited

KB5066780

114 CVEs · Critical · exploited

KB5066782

103 CVEs · Critical · exploited

KB5066791

98 CVEs · Critical · exploited

KB5066793

108 CVEs · Critical · exploited

KB5066835

134 CVEs · Critical · exploited

KB5068779

32 CVEs · Critical · exploited

KB5068781

33 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5002815 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.