Patch tracker / KB5100263

KB5100263: Dynamics 365 Business Central Release Security Update (August 2026)

KB5100263 is a Medium security update for Dynamics 365 Business Central Release, released 2026-08-11. It closes 1 CVE with a maximum CVSS of 6.5. It is the 51st largest of the 65 updates Microsoft shipped that month, by CVEs closed.

Update summary

Medium
2026-08-11
Released
1
CVEs fixed
6.5
Max CVSS v3
Medium
Severity
Deploy this cycle
Fixes 1 CVE for Dynamics 365 Business Central Release. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 6.5 (Medium). EPSS exploit probability up to <1%. Among the lower half of tracked Microsoft updates by EPSS exploit probability.

Microsoft Update Catalog: download KB5100263Microsoft support article
Senserva AI Opinion and rich prompt for KB5100263

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

Full tracking and change history for KB5100263

Released
2026-08-11
Last changed
2026-09-26
Changes tracked
3

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 KB5100263 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.

CVESeverityCVSSEPSSExploited
CVE-2026-40375Medium6.5<1%No

Scope and sources

Affected products
Also released in August 2026

KB5120228

215 CVEs · Critical · exploited

KB5120229

195 CVEs · Critical · exploited

KB5120233

215 CVEs · Critical · exploited

KB5120238

183 CVEs · Critical · exploited

KB5120240

170 CVEs · Critical · exploited

KB5120242

195 CVEs · Critical · exploited

KB5120385

144 CVEs · Critical · exploited

KB5120386

139 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5100263 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.
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