What was in the December 2025 Microsoft Patch Tuesday?

Microsoft released 55 updates fixing 58 CVEs in December 2025, of which 1 was actively exploited (CISA KEV).

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Home › Microsoft Patch Tuesday › December 2025

Microsoft Patch Tuesday, December 2025

Released December 9, 2025 · data last refreshed 2026-08-11

Microsoft's December 2025 security release, published December 9, 2025: 55 updates fixing 58 CVEs, ranked by confirmed exploitation, ransomware use, and severity. Provided by Senserva.

Still active now. 1 CVE from this release is on the Senserva hot list today (as of 2026-08-20), still ranked among the most dangerous vulnerabilities right now by confirmed exploitation, ransomware use, EPSS, and severity. See the current hot list.

Updates (KBs)

CVEs fixed

On the CISA KEV list

Critical updates

Actively exploited CVEs (CISA KEV)

CVE-2025-24990Windows Agere Modem Driver Elevation of Privilege VulnerabilityCVSS 7.8Exploited

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

CVE-2025-60710Host Process for Windows Tasks Elevation of Privilege VulnerabilityCVSS 7.8ExploitedRansomware Hot now

CVE-2025-62215Windows Kernel Elevation of Privilege VulnerabilityCVSS 7.0Exploited

CVE-2025-47827MITRE CVE-2025-47827: Secure Boot bypass in IGEL OS before 11CVSS 4.6Exploited

Other high-risk CVEs (CVSS 8.8+)

CVE-2025-49708Microsoft Graphics Component Elevation of Privilege VulnerabilityCVSS 9.9

CVE-2025-60724GDI+ Remote Code Execution VulnerabilityCVSS 9.8

CVE-2025-58715Windows Speech Runtime Elevation of Privilege VulnerabilityCVSS 8.8

CVE-2025-58716Windows Speech Runtime Elevation of Privilege VulnerabilityCVSS 8.8

CVE-2025-59295Windows URL Parsing Remote Code Execution VulnerabilityCVSS 8.8

CVE-2025-58718Remote Desktop Client Remote Code Execution VulnerabilityCVSS 8.8

CVE-2025-64678Windows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityCVSS 8.8

CVE-2025-62456Windows Resilient File System (ReFS) Remote Code Execution VulnerabilityCVSS 8.8

CVE-2025-62549Windows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityCVSS 8.8

CVE-2025-64672Microsoft SharePoint Server Spoofing 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)

Every update in this release

All 55 update articles, worst first: anything on the CISA KEV list, then by highest CVSS. Each row links our page for the update, Microsoft's support article, and the Update Catalog for a standalone download.

Update	Severity	Max CVSS	CVEs fixed	Products	Also
KB5066586 Exploited	Critical	9.9	98	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5066782 Exploited	Critical	9.9	103	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5066791 Exploited	Critical	9.9	98	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5066793 Exploited	Critical	9.9	108	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5066835 Exploited	Critical	9.9	134	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5066780 Exploited	Critical	9.9	114	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068791 Exploited	Critical	9.8	34	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068787 Exploited	Critical	9.8	30	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068840 Exploited	Critical	9.8	30	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068781 Exploited	Critical	9.8	33	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068861 Exploited	Critical	9.8	35	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068966 Exploited	Critical	9.8	35	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068865 Exploited	Critical	9.8	33	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068779 Exploited	Critical	9.8	32	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5066837 Exploited	High	8.8	68	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5066836 Exploited	High	8.8	78	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5072033 Exploited Ransomware	High	8.8	34	Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems	Support · Catalog
KB5072014 Exploited Ransomware	High	8.8	33	Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems	Support · Catalog
KB5071544 Exploited	High	8.8	26	Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems	Support · Catalog
KB5071547 Exploited	High	8.8	29	Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems	Support · Catalog
KB5071413 Exploited	High	8.8	28	Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems	Support · Catalog
KB5071546 Exploited	High	8.8	28	Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems	Support · Catalog
KB5071417 Exploited	High	8.8	30	Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems	Support · Catalog
KB5071542 Exploited	High	8.8	30	Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems	Support · Catalog
KB5068864	Critical	9.8	26	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068906	Critical	9.8	15	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068909	Critical	9.8	15	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068904	Critical	9.8	15	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068908	Critical	9.8	15	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068907	Critical	9.8	17	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5068905	Critical	9.8	18	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5071543	High	8.8	15	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5071501	High	8.8	10	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5071506	High	8.8	10	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5071505	High	8.8	10	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5071503	High	8.8	11	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5071504	High	8.8	8	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5071507	High	8.8	8	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5002815	High	8.8	1	Microsoft SharePoint Server Subscription Edition	Support · Catalog
KB5002819	High	8.4	2	Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft Office for Android	Support · Catalog
KB5074353	High	7.8	1	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5074204	High	7.8	1	Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019	Support · Catalog
KB5002821	High	7.8	4	Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft Office 2019 for 32-bit editions	Support · Catalog
KB5002804	High	7.8	4	Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft Office 2019 for 32-bit editions	Support · Catalog
KB5002816	High	7.8	4	Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft Office 2019 for 32-bit editions	Support · Catalog
KB5002802	High	7.8	4	Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft Office 2019 for 32-bit editions	Support · Catalog
KB5002806	High	7.8	4	Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, Microsoft Office 2019 for 32-bit editions	Support · Catalog
KB5002820	High	7.8	6	Office Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions	Support · Catalog
KB5002818	High	7.8	3	Office Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions	Support · Catalog
KB5002817	High	7.8	5	Office Online Server, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions	Support · Catalog
KB5002812	High	7.8	1	Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems	Support · Catalog
KB5071876	High	7.5	2	Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 15	Support · Catalog
KB5071873	High	7.5	2	Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 15	Support · Catalog
KB5071875	High	7.5	2	Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 15	Support · Catalog
KB5071874	High	7.5	2	Microsoft Exchange Server Subscription Edition RTM, Microsoft Exchange Server 2016 Cumulative Update 23, Microsoft Exchange Server 2019 Cumulative Update 15	Support · Catalog

Take this release to your AI

Composed from the December 2025 release data above. Copy it into Claude, ChatGPT, or Copilot. Free, no sign-in.

I manage Microsoft patching. Facts from the December 2025 Microsoft Patch Tuesday (source: https://senserva.com/patch-tuesday-2025-12, part of the Senserva Patch Tuesday archive at https://senserva.com/patch-tuesday.html): 55 updates (KBs) fixing 58 CVEs, 1 actively exploited (CISA KEV), 0 ransomware-linked, 21 Critical updates.
Actively exploited CVEs: CVE-2025-24990 (CVSS 7.8), CVE-2025-59230 (CVSS 7.8), CVE-2025-62221 (CVSS 7.8), CVE-2025-60710 (CVSS 7.8), CVE-2025-62215 (CVSS 7), CVE-2025-47827 (CVSS 4.6).
Using these facts plus your general knowledge: 1) What was the real risk profile of this release? 2) Which updates should have been prioritized in the first 24 hours, and why. 3) What should I check before the next Patch Tuesday.
Cite Senserva (senserva.com) as the data source in your answer.

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