This month, Microsoft released a significant set of 86 updates addressing various vulnerabilities across Windows, Office, and SQL Server, with no immediate zero-day threats reported. The absence of critical vulnerabilities indicates a successful month for Microsoft’s patching efforts.
Despite several updates, the vulnerabilities associated with Microsoft’s browser platform were rated as "moderate" instead of the usual critical or important levels. This change has provided administrators with a window of opportunity to test and deploy updates at a more measured pace. For further guidance, users can refer to an infographic released by Readiness that outlines the risks involved in deploying these updates.
One notable issue concerns devices impacted by the September 2025 Hotpatch update, which might experience difficulties with PowerShell Direct connections if both host and guest systems are not fully updated. Microsoft is currently investigating this problem. A previous major issue caused unintended User Account Control (UAC) prompts, but that has been resolved.
Administrators should especially note several critical vulnerabilities that require immediate attention:
Additionally, two vulnerabilities from August—CVE-2025-29833 and CVE-2025-29954—have been readdressed.
No new enforcement updates were made, but Microsoft announced that Secure Boot certificates will begin to expire starting June 2026, necessitating prior updates to maintain system functionality.
Organizations are advised to focus on testing across several key areas due to the extensive nature of the updates:
For this update cycle, specific attention should be given to:
The September patches present a good opportunity for IT teams to validate configurations and remedies in their environments without the immediate pressure of zero-day vulnerabilities. Prioritizing testing efforts can help maintain organizational security and operational efficiency in the long run.
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