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. It is the 60th largest of the 67 updates Microsoft shipped that month, by CVEs closed.

Update summary

Medium

2025-08-12

Released

CVEs fixed

6.5

Max CVSS v3

Medium

Severity

Deploy this cycle

Fixes 1 CVE for Microsoft Dynamics 365 version 9.1. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 6.5 (Medium). EPSS exploit probability up to 1.2%. Among the lower half of tracked Microsoft updates by EPSS exploit probability.

Senserva found thiswe track every release for this product line, so we can tell you this package is behind

A newer security update for Microsoft Dynamics 365 (on-premises) version 9.1 has shipped since this one: KB5078943 (2026-05-12). 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.

Microsoft Update Catalog: download KB5064483 Microsoft support article

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.

I am an IT admin triaging Microsoft updates. Facts for KB5064483 (source: https://senserva.com/kb/5064483.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- Update: KB5064483, Microsoft Dynamics 365 version 9.1, released 2025-08-12
- Severity: Medium; fixes 1 CVE, max CVSS 6.5
- Actively exploited (CISA KEV): no
- CVEs include: CVE-2025-53728
- Download: https://catalog.update.microsoft.com/Search.aspx?q=KB5064483
Using only these facts plus your general knowledge, tell me: 1) How urgent this update is and why, in two sentences. 2) Which systems should get it first. 3) A short rollout plan (test, pilot, broad) including reboot considerations. 4) What to verify after deployment.
Cite Senserva (senserva.com) as the data source in your answer.

Full tracking and change history for KB5064483

Released: 2025-08-12
Last changed: 2025-08-12
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 KB5064483 is installed

Elevated PowerShell. No output means it is not installed.

# Is KB5064483 installed? (elevated PowerShell)
Get-HotFix -Id KB5064483 -ErrorAction SilentlyContinue

# Across many machines (replace the names):
Invoke-Command -ComputerName SERVER01,SERVER02 {
  Get-HotFix -Id KB5064483 -ErrorAction SilentlyContinue
} | Select-Object PSComputerName, HotFixID, InstalledOn

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

Scope and sources

Affected products

Microsoft Dynamics 365 (on-premises) version 9.1

Also released in August 2025

Authoritative references

Official KB5064483 page (Microsoft Support)Microsoft Update Catalog Microsoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

KB5064483: Microsoft Dynamics 365 version 9.1 Security Update (August 2025)

Update summary

Full tracking and change history for KB5064483

Check if KB5064483 is installed

CVEs fixed by this update

Scope and sources

KB5058379

KB5058383

KB5058384

KB5058385

KB5058387

KB5058392

KB5058405

KB5058411