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Microsoft Patch Tuesday, December 2025
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Microsoft's December 2025 security release, published December 9, 2025: 55 updates fixing 223 CVEs, ranked by confirmed exploitation, ransomware use, and severity. Provided by Senserva.
55
Updates (KBs)
223
CVEs fixed
6
Actively exploited
21
Critical updates
Actively exploited CVEs (CISA KEV)
CVE-2025-59230Windows Remote Access Connection Manager Elevation of Privilege VulnerabilityCVSS 7.8Exploited
CVE-2025-62221Windows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityCVSS 7.8Exploited
Other high-risk CVEs (CVSS 8.8+)
CVE-2025-64678Windows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityCVSS 8.8
CVE-2025-62549Windows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityCVSS 8.8
Products fixed this month
Windows 10 Version 1809 for 32-bit Systems (40)Windows 10 Version 1809 for x64-based Systems (32)Windows Server 2019 (32)Microsoft Office 2019 for 32-bit editions (9)Windows 11 Version 25H2 for ARM64-based Systems (8)Windows 11 Version 25H2 for x64-based Systems (8)Microsoft SharePoint Enterprise Server 2016 (5)Microsoft SharePoint Server 2019 (5)Microsoft Office 2019 for 64-bit editions (5)Microsoft Exchange Server Subscription Edition RTM (4)
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