Patch tracker / KB5002661

KB5002661: Microsoft Office 2016 Security Update (December 2024)

KB5002661 is a High security update for Microsoft Office 2016, released 2024-12-10. It closes 2 CVEs with a maximum CVSS of 7.8. It is the 22nd largest of the 27 updates Microsoft shipped that month, by CVEs closed.

Update summary

High
2024-12-10
Released
2
CVEs fixed
7.8
Max CVSS v3
High
Severity
Deploy this cycle
Fixes 2 CVEs for Microsoft Office 2016. No confirmed in-the-wild exploitation in this set today.

Fixes 2 CVEs. Most severe CVSS 7.8 (High). EPSS exploit probability up to 1.2%. 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 Office 2016 (32-bit edition) has shipped since this one: KB5002822 (2026-01-13). 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 KB5002661Microsoft support article
Senserva AI Opinion for KB5002661

This December 2024 update covers both Office 2016 and SharePoint Enterprise Server 2016, fixing two High severity issues at CVSS 7.8, including CVE-2024-43600 shared with several other Office KBs this cycle. Because it spans both a desktop application and a SharePoint server role, exposure includes end-user machines running Office 2016 as well as any SharePoint 2016 farm still on this build. Neither CVE is currently in CISA KEV or linked to ransomware.

Do this: Patch both Office 2016 clients and SharePoint Server 2016 farms with KB5002661.

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

Senserva AI Opinion and rich prompt for KB5002661

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

Full tracking and change history for KB5002661

Released
2024-12-10
Last changed
2024-12-10
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 KB5002661 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-2024-43600High7.81.2%No
CVE-2024-49065Medium5.53.3%No

Scope and sources

Affected products
Also released in December 2024

KB5048652

46 CVEs · Critical · exploited

KB5048653

56 CVEs · Critical · exploited

KB5048654

41 CVEs · Critical · exploited

KB5048661

55 CVEs · Critical · exploited

KB5048667

57 CVEs · Critical · exploited

KB5048671

32 CVEs · Critical · exploited

KB5048676

24 CVEs · Critical · exploited

KB5048685

46 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5002661 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.