Patch tracker / KB5002566
KB5002566: Microsoft Office 2019 for 32-bit editi Security Update (September 2024)
KB5002566 is a High security update for Microsoft Office 2019 for 32-bit editi, released 2024-09-10. It closes 1 CVE with a maximum CVSS of 7.3. At least one of them is actively exploited (CISA KEV), so this is a deploy-first update. It is the 30th largest of the 45 updates Microsoft shipped that month, by CVEs closed.
Update summary
Fixes 1 CVE. At least one is actively exploited (CISA KEV). Most severe CVSS 7.3 (High). EPSS exploit probability up to 2.7%. Among the top half of tracked Microsoft updates by EPSS exploit probability.
A newer security update for Microsoft Office 2019 for 32-bit editions has shipped since this one: KB5002755 (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.
KB5002566 is a September 2024 Office update for Office 2019 and Office LTSC 2021 that fixes a single vulnerability, CVE-2024-38226, rated 7.3 High. Despite the modest CVSS and low 3 percent EPSS score, CISA lists this CVE as an actively exploited vulnerability, so document-based attacks against unpatched Office clients remain a real risk. This is an older update, so any machine still missing it has likely been exposed for well over a year.
Do this: Audit for and immediately deploy KB5002566 on any remaining Office 2019 or Office LTSC 2021 installs that have not received it.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5002566
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5002566
- Released
- 2024-09-10
- Last changed
- 2024-09-10
- 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 KB5002566 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.
| CVE | Severity | CVSS | EPSS | Exploited |
|---|---|---|---|---|
| CVE-2024-38226 | High | 7.3 | 2.7% | KEV |
Scope and sources
- Affected products
- Also released in September 2024
KB5043083
24 CVEs · Critical · exploitedKB5042880
37 CVEs · High · exploitedKB5042881
37 CVEs · High · exploitedKB5043049
2 CVEs · High · exploitedKB5043050
36 CVEs · High · exploitedKB5043051
37 CVEs · High · exploitedKB5043055
37 CVEs · High · exploitedKB5043064
29 CVEs · High · exploitedThe full month, summarized: Microsoft Patch Tuesday.
- Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.