Patch tracker / KB5002830

KB5002830: Microsoft Office 365 for Mac Security Update (July 2026)

KB5002830 is a High security update for Microsoft Office 365 for Mac, released 2026-07-14. It closes 1 CVE with a maximum CVSS of 7.8. It is the 58th largest of the 62 updates Microsoft shipped that month, by CVEs closed.

Update summary

High
2026-07-14
Released
1
CVEs fixed
7.8
Max CVSS
High
Severity
Deploy this cycle
Fixes 1 CVE for Microsoft Office 365 for Mac. 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 Office 365 for Mac has shipped since this one: KB5002884 (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 KB5002830 on 2026-08-12 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 KB5002830Microsoft support article
Senserva AI Opinion for KB5002830

KB5002830 is a Security Update for Microsoft Office 2016 in both 32-bit and 64-bit editions, released in the July 2026 Patch Tuesday cycle. Any organization still running Office 2016 desktop installs is exposed, and this data is provisional because Microsoft has not yet published the per-update CVE detail for this cycle. No named zero-days are mapped to this update, so it can be scheduled rather than rushed as an emergency.

Do this: Inventory your Office 2016 32-bit and 64-bit installs today and queue KB5002830 for your normal patch ring, then recheck once Microsoft publishes the per-CVE detail.

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

Senserva AI Opinion and rich prompt for KB5002830

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

Full tracking and change history for KB5002830

Released
2026-07-14
Last changed
2026-07-14
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 KB5002830 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-2026-55140High7.8<1%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 KB5002830 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.