Microsoft · ServicingStack update · February 11, 2025

KB5052106: February 2025 cumulative update for Windows Server 2022

KB5052106, released February 11, 2025, fixes 33 CVEs across 2 products. 2 of them are being exploited (CVE-2025-21391); 2 on CISA KEV. Patch Radar priority: Patch now.

Patch now2 on CISA KEV1 publicly disclosed

CVEs closed

1 rated Critical

Exploited

CVE-2025-21391

Exploitation more likely

Microsoft's assessment

Highest EPSS

0.3993

98th percentile

Priority of the 33 CVEs

Patch now 2
                                Urgent 8
                                High 15
                                Routine 8

Applies to

Product	Build after install
Windows Server 2022	20348.3148
Windows Server 2022 (Server Core installation)	20348.3148

CVEs this fix closes

Priority	CVE	Component	Impact	CVSS	EPSS	Exploitation
Patch now	CVE-2025-21391	Windows Storage	Elevation of Privilege	7.1	0.0228	KEVExploited
Patch now	CVE-2025-21418	Windows Ancillary Function Driver for WinSock	Elevation of Privilege	7.8	0.0213	KEVExploited
Urgent	CVE-2025-21377	Windows NTLM	Spoofing	6.5	0.3993	DisclosedMore likely
Urgent	CVE-2025-21376	Windows LDAP - Lightweight Directory Access Protocol	Remote Code Execution	8.1	0.0931	More likely
Urgent	CVE-2025-21420	Windows Disk Cleanup Tool	Elevation of Privilege	7.8	0.0367	More likely
Urgent	CVE-2025-21358	Windows CoreMessaging	Elevation of Privilege	7.8	0.0076	More likely
Urgent	CVE-2025-21419	Windows Setup Files Cleanup	Elevation of Privilege	7.1	0.0072	More likely
Urgent	CVE-2025-21367	Windows Win32 Kernel Subsystem	Elevation of Privilege	7.8	0.0064	More likely
Urgent	CVE-2025-21414	Windows DWM Core Library	Elevation of Privilege	7.0	0.0061	More likely
Urgent	CVE-2025-21184	Windows CoreMessaging	Elevation of Privilege	7.0	0.0061	More likely
High	CVE-2025-21181	Windows Message Queuing	Denial of Service	7.5	0.0348	Exploitation Less Likely
High	CVE-2025-21351	Active Directory Domain Services	Denial of Service	7.5	0.0247	Exploitation Less Likely
High	CVE-2025-21371	Windows Telephony Service	Remote Code Execution	8.8	0.0243	Exploitation Less Likely
High	CVE-2025-21368	Microsoft Digest Authentication	Remote Code Execution	8.8	0.0215	Exploitation Less Likely
High	CVE-2025-21369	Microsoft Digest Authentication	Remote Code Execution	8.8	0.0215	Exploitation Less Likely
High	CVE-2025-21406	Windows Telephony Service	Remote Code Execution	8.8	0.0182	Exploitation Less Likely
High	CVE-2025-21407	Windows Telephony Service	Remote Code Execution	8.8	0.0182	Exploitation Less Likely
High	CVE-2025-21410	Windows Routing and Remote Access Service (RRAS)	Remote Code Execution	8.8	0.0182	Exploitation Less Likely
High	CVE-2025-21190	Windows Telephony Service	Remote Code Execution	8.8	0.0181	Exploitation Less Likely
High	CVE-2025-21200	Windows Telephony Service	Remote Code Execution	8.8	0.0181	Exploitation Less Likely
High	CVE-2025-21201	Windows Telephony Server	Remote Code Execution	8.8	0.0181	Exploitation Less Likely
High	CVE-2025-21208	Windows Routing and Remote Access Service (RRAS)	Remote Code Execution	8.8	0.0181	Exploitation Less Likely
High	CVE-2025-21373	Windows Installer	Elevation of Privilege	7.8	0.0080	Exploitation Less Likely
High	CVE-2025-21375	Microsoft Streaming Service	Elevation of Privilege	7.8	0.0065	Exploitation Less Likely
High	CVE-2025-21359	Windows Kernel	Security Feature Bypass	7.8	0.0056	Exploitation Less Likely

Released the same day

KB5002179
Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition)
KB5002678
Microsoft SharePoint Server 2019
KB5002679
Office Online Server
KB5002681
Microsoft SharePoint Server Subscription Edition
KB5002684
Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition)
KB5002685
Microsoft SharePoint Enterprise Server 2016
KB5002686
Microsoft Office 2016 (32-bit edition), Microsoft Office 2016 (64-bit edition)
KB5002687
Microsoft Excel 2016 (32-bit edition), Microsoft Excel 2016 (64-bit edition)
KB5049688
Microsoft Visual Studio 2015 Update 3
KB5051972
Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation), Windows Server 2008 for 32-bit Systems Service Pack 2 and 7 more
KB5051974
Windows 10 Version 21H2 for 32-bit Systems, Windows 10 Version 21H2 for ARM64-based Systems, Windows 10 Version 21H2 for x64-based Systems and 3 more
KB5051979
Windows Server 2022, Windows Server 2022 (Server Core installation)

Vendor advisory

https://support.microsoft.com/help/5052106

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/fix/microsoft/kb5052106">KB5052106 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Which machines still need it?

Patchblox reads the OS build on every Windows machine, from Intune, ConfigMgr or its own agent, and shows which ones are still below the fixed build.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.