For October's Patch Tuesday, a scary number of fixes

"Microsoft this week released 175 updates affecting Windows and Office and .NET, including server-based updates for Microsoft SQL Server and Exchange server. There are also four zero-day fixes ( CVE-2025-24052, CVE-2025-24990, CVE-2025-2884 and CVE-2025-59230), leading to a "Patch Now" recommendation for Windows. (All other updates can be added to your standard patch release schedule.) To help you navigate these changes, the Readiness team created this detailed infographic detailing the risks of deploying updates to each platform."

"Microsoft documented a single, relatively minor issue with last month's patches affecting Windows 11 desktops only: Applications that use Enhanced Video Renderer ( ECR) with HDCP enforcement or Digital Rights Management (DRM) for digital audio might show copyright protection errors, frequent playback interruptions, unexpected stops, or black screens. Microsoft partially resolved this problem with its October update. We don't expect an out-of-bounds fix for this playback issue; a full fix may have to wait until next month."

"Microsoft published several revisions to its Azure Entra ID and authentication offering and other Azure tools. However, there appears to be only one revision to a desktop (or server) patch since September:n CVE-2025-50173: Windows Installer Elevation of Privilege Vulnerability. Microsoft has updated the recommendations for this patch to include using the Multimedia Redirection Installer as well as updating all affected target systems. This revision requires customer action and should be considered for most enterprise deployments."

Microsoft released 175 updates covering Windows, Office, .NET, Microsoft SQL Server and Exchange Server. Four zero-day vulnerabilities (CVE-2025-24052, CVE-2025-24990, CVE-2025-2884 and CVE-2025-59230) require immediate patching for Windows, while other updates can be scheduled normally. The Readiness team produced an infographic that details deployment risks across platforms. A Windows 11 playback issue affecting Enhanced Video Renderer (ECR) with HDCP or DRM received a partial October fix; a full correction may arrive next month. Several Azure Entra ID and Azure tool revisions were published, and CVE-2025-50173 now requires customer action and use of the Multimedia Redirection Installer.

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