Patch tracker / KB5002713
KB5002713: Microsoft Office 2019 for 32-bit editi Security Update (January 2026)
KB5002713 is a High security update for Microsoft Office 2019 for 32-bit editi, released 2026-01-13. It closes 1 CVE with a maximum CVSS of 7.8. At least one of them is actively exploited (CISA KEV), so this is a deploy-first update. The most likely of them to be attacked is CVE-2026-21509, which FIRST.org rates at 72% probability of exploitation in the next 30 days.
Update summary
Fixes 1 CVE. At least one is actively exploited (CISA KEV). Most severe CVSS 7.8 (High). EPSS exploit probability up to 72%. Among the top 10% 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.
KB5002713 patches CVE-2026-21509, a single High severity flaw (CVSS 7.8) in Office 2019 and Microsoft 365 Apps for Enterprise. What stands out is that this CVE is already on CISA's KEV list and carries a 72% EPSS score, so it is being actively exploited despite not being tied to ransomware. Any workstation running these Office builds is exposed until the update is applied.
Do this: Deploy KB5002713 to all Office 2019 and Microsoft 365 Apps machines now, prioritizing internet-facing and high-value user endpoints given the confirmed active exploitation.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5002713
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5002713
- Released
- 2026-01-13
- Last changed
- 2026-01-13
- 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 KB5002713 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-2026-21509 | High | 7.8 | 72% | KEV |
Scope and sources
- Affected products
- Also released in January 2026
KB5002822
6 CVEs · Critical · exploitedKB5002825
7 CVEs · Critical · exploitedKB5002828
7 CVEs · Critical · exploitedKB5073379
86 CVEs · Critical · exploitedKB5073450
80 CVEs · Critical · exploitedKB5073455
80 CVEs · Critical · exploitedKB5073457
78 CVEs · Critical · exploitedKB5073722
54 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.