September Patch Tuesday: Essential Updates for Windows, Office, and SQL Server

Microsoft released 86 patches this month, addressing key issues in Windows, Office, and SQL Server, and importantly, there were no zero-day vulnerabilities identified. This release indicates a sign of progress from Microsoft’s update team, as updates to the browser platform were rated as “moderate” security risks instead of more urgent classifications.

For those looking for guidance on the update process, a detailed infographic has been crafted to illustrate risks associated with deploying these updates. Additionally, previous reports identified an edge case affecting hot patched devices with the September 2025 updates, which may cause failures with PowerShell Direct connections if both host and guest machines are not fully updated.

Some noteworthy vulnerabilities were addressed this month, including a remote code execution vulnerability in Windows Hyper-V and an elevation of privilege vulnerability in Active Directory Domain Services. Both require immediate attention from administrators.

The updates also emphasize essential testing across various systems, particularly focusing on network infrastructure, graphics subsystems, and authentication components. Testing scenarios outlined include validating network features such as IPv6, assessing authentication protocols, and ensuring stable performance across graphical applications.

With significant changes to Bluetooth protocols and routing services, organizations are advised to rigorously test in network-heavy environments, ensuring compatibility with wireless peripherals and the routing infrastructure remains intact.

Importantly, no enforcement updates were published this month, although manufacturers should prepare for upcoming Secure Boot certificate expirations starting in June 2026.

In summary, while the absence of critical or zero-day vulnerabilities contributes to a calmer Patch Tuesday, the breadth of this month’s updates signifies the necessity for proactive management and testing within IT environments.

For further reading on Microsoft patches and updates, please refer to:


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