Patch tracker / KB5064483
KB5064483: Microsoft Dynamics 365 version 9.1 Security Update (August 2025)
KB5064483 is a Medium security update for Microsoft Dynamics 365 version 9.1, released 2025-08-12. It closes 1 CVE with a maximum CVSS of 6.5. Get it from the Microsoft Update Catalog below, and see where it sits against the rest of the month on the patch tracker.
Update summary
New to these terms? How the Microsoft patching tools fit together, this month's Patch Tuesday summary, and every update ranked by real-world risk.
Senserva AI Opinion for KB5064483
KB5064483 patches a single flaw (CVE-2025-53728) in Microsoft Dynamics 365 on-premises version 9.1, rated Medium at CVSS 6.5. Only organizations running the self-hosted 9.1 deployment are affected; online tenants get updates from Microsoft directly. The EPSS is 1 percent with no CISA KEV or ransomware association, so this is routine hardening rather than an emergency.
Do this: Schedule KB5064483 into your next maintenance window for any on-premises Dynamics 365 version 9.1 servers and confirm your inventory covers all self-hosted instances.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5064483
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5064483
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.
Exploitation and severity
Fixes 1 CVE. Most severe CVSS 6.5 (Medium). EPSS exploit probability up to 1.2%.
Among the lower half of tracked Microsoft updates by EPSS exploit probability.
What to do
Lower priority: patch in your normal cycle. Senserva flags whether KB5064483 is missing on your devices.
Check if KB5064483 is installed
Copy-paste PowerShell: one machine, or your whole estate in one pass. No output means the update is not installed.
Get-HotFix covers Windows updates. Office, SharePoint, and Exchange server updates show under installed updates in Programs and Features, or check the Update Catalog history.
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-2025-53728 | Medium | 6.5 | 1.2% | No |
Affected products
Also released in August 2025
The highest-risk updates from the same release:
The full month, summarized: Microsoft Patch Tuesday.
Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.