Patch tracker / KB4475587
KB4475587: Microsoft Office 2019 for 32-bit editi Security Update (December 2024)
KB4475587 is a High security update for Microsoft Office 2019 for 32-bit editi, 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
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.
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.
KB4475587 fixes two Office vulnerabilities in Microsoft Office 2019 and Microsoft 365 Apps for Enterprise, both reaching High severity at CVSS 7.8. Office document handling flaws like these are typically triggered by opening a malicious file, so any user on the affected builds who opens untrusted attachments is exposed. Neither CVE is currently in CISA KEV or tied to ransomware, but document-based attacks remain a common phishing delivery method.
Do this: Deploy KB4475587 to all Office 2019 and Microsoft 365 Apps for Enterprise clients.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB4475587
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB4475587
- 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 KB4475587 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-2024-43600 | High | 7.8 | 1.2% | No |
| CVE-2024-49059 | High | 7.0 | 1.2% | No |
Scope and sources
- Affected products
- Also released in December 2024
KB5048652
46 CVEs · Critical · exploitedKB5048653
56 CVEs · Critical · exploitedKB5048654
41 CVEs · Critical · exploitedKB5048661
55 CVEs · Critical · exploitedKB5048667
57 CVEs · Critical · exploitedKB5048671
32 CVEs · Critical · exploitedKB5048676
24 CVEs · Critical · exploitedKB5048685
46 CVEs · Critical · 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.