Microsoft has issued 159 security updates for January 2025, addressing a range of vulnerabilities. The updates encompass a resolution for .NET, .NET Framework, Visual Studio, Microsoft Office Access, Power Automate, Windows MapUrlToZone, Active Directory Federation Services, Windows Recovery Environment Agent, Windows Connected Devices Platform Service, Windows Virtual Trusted Platform Module, Windows Boot Loader, Windows BitLocker, Windows Boot Manager, Windows Mark of the Web, Windows Kerberos, Windows Message Queuing, Windows Telephony Service, Line Printer Daemon Service (LPD), Windows Remote Desktop Services, Windows Digital Media, IP Helper, Windows PrintWorkflowUserSvc, and other related services.
January 2025 Security Updates
This release consists of the following 159 Microsoft CVEs:
Tag CVE Base Score FAQs? Workarounds? Mitigations? .NET CVE-2025-21171 8.1 Yes No No .NET and Visual Studio CVE-2025-21172 7.5 Yes No No .NET CVE-2025-21173 8.0 Yes No No .NET, .NET Framework, Visual Studio CVE-2025-21176 8.8 Yes No No Visual Studio CVE-2025-21178 8.8 Yes No No Microsoft Office Access CVE-2025-21186 7.8 Yes No No Power Automate CVE-2025-21187 7.8 Yes No No Windows MapUrlToZone CVE-2025-21189 4.3 Yes No No Active Directory Federation Services CVE-2025-21193 6.5 Yes No No Windows Recovery Environment Agent CVE-2025-21202 6.1 Yes No No Windows Connected Devices Platform Service CVE-2025-21207 7.5 Yes No No Windows Virtual Trusted Platform Module CVE-2025-21210 4.2 Yes No No Windows Boot Loader CVE-2025-21211 6.8 Yes No No Windows BitLocker CVE-2025-21213 4.6 Yes No No Windows BitLocker CVE-2025-21214 4.2 Yes No No Windows Boot Manager CVE-2025-21215 4.6 Yes No No Windows Mark of the Web (MOTW) CVE-2025-21217 6.5 Yes No No Windows Kerberos CVE-2025-21218 7.5 Yes No No Windows MapUrlToZone CVE-2025-21219 4.3 Yes No No Windows Message Queuing CVE-2025-21220 7.5 Yes No No Windows Telephony Service CVE-2025-21223 8.8 Yes No No Line Printer Daemon Service (LPD) CVE-2025-21224 8.1 Yes No Yes Windows Remote Desktop Services CVE-2025-21225 5.9 Yes No No Windows Digital Media CVE-2025-21226 6.6 Yes No No Windows Digital Media CVE-2025-21227 6.6 Yes No No Windows Digital Media CVE-2025-21228 6.6 Yes No No Windows Digital Media CVE-2025-21229 6.6 Yes No No Windows Message Queuing CVE-2025-21230 7.5 Yes No No IP Helper CVE-2025-21231 7.5 Yes No No Windows Digital Media CVE-2025-21232 6.6 Yes No No Windows Telephony Service CVE-2025-21233 8.8 Yes No No Windows PrintWorkflowUserSvc CVE-2025-21234 7.8 Yes No No Windows PrintWorkflowUserSvc CVE-2025-21235 7.8 Yes No No Windows Telephony Service CVE-2025-21236 8.8 Yes No No Windows Telephony Service CVE-2025-21237 8.8 Yes No No Windows Telephony Service CVE-2025-21238 8.8 Yes No No Windows Telephony Service CVE-2025-21239 8.8 Yes No No Windows Telephony Service CVE-2025-21240 8.8 Yes No No Windows Telephony Service CVE-2025-21241 8.8 Yes No No Windows Kerberos CVE-2025-21242 5.9 Yes No No Windows Telephony Service CVE-2025-21243 8.8 Yes No No Windows Telephony Service CVE-2025-21244 8.8 Yes No No Windows Telephony Service CVE-2025-21245 8.8 Yes No No Windows Telephony Service CVE-2025-21246 8.8 Yes No No Windows Telephony Service CVE-2025-21248 8.8 Yes No No Windows Digital Media CVE-2025-21249 6.6 Yes No No Windows Telephony Service CVE-2025-21250 8.8 Yes No No Windows Message Queuing CVE-2025-21251 7.5 Yes No No Windows Telephony Service CVE-2025-21252 8.8 Yes No No Windows Digital Media CVE-2025-21255 6.6 Yes No No Windows Digital Media CVE-2025-21256 6.6 Yes No No Windows WLAN Auto Config Service CVE-2025-21257 5.5 Yes No No Windows Digital Media CVE-2025-21258 6.6 Yes No No Windows Digital Media CVE-2025-21260 6.6 Yes No No Windows Digital Media CVE-2025-21261 6.6 Yes No No Windows Digital Media CVE-2025-21263 6.6 Yes No No Windows Digital Media CVE-2025-21265 6.6 Yes No No Windows Telephony Service CVE-2025-21266 8.8 Yes No No Windows MapUrlToZone CVE-2025-21268 4.3 Yes No No Windows MapUrlToZone CVE-2025-21269 4.3 Yes No No Windows Message Queuing CVE-2025-21270 7.5 Yes No No Windows Cloud Files Mini Filter Driver CVE-2025-21271 7.8 Yes No No Windows COM CVE-2025-21272 6.5 Yes No No Windows Telephony Service CVE-2025-21273 8.8 Yes No No Windows Event Tracing CVE-2025-21274 5.5 Yes No No Windows Installer CVE-2025-21275 7.8 Yes No No Windows MapUrlToZone CVE-2025-21276 7.5 Yes No No Windows Message Queuing CVE-2025-21277 7.5 Yes No No Windows Remote Desktop Services CVE-2025-21278 6.2 No No No Windows Virtual Trusted Platform Module CVE-2025-21280 5.5 Yes No No Windows COM CVE-2025-21281 7.8 Yes No No Windows Telephony Service CVE-2025-21282 8.8 Yes No No Windows Virtual Trusted Platform Module CVE-2025-21284 5.5 Yes No No Windows Message Queuing CVE-2025-21285 7.5 Yes No No Windows Telephony Service CVE-2025-21286 8.8 Yes No No Windows Installer CVE-2025-21287 7.8 Yes No No Windows COM CVE-2025-21288 6.5 Yes No No Windows Message Queuing CVE-2025-21289 7.5 Yes No No Windows Message Queuing CVE-2025-21290 7.5 Yes No No Windows Direct Show CVE-2025-21291 8.8 Yes No No Microsoft Windows Search Component CVE-2025-21292 8.8 Yes No No Active Directory Domain Services CVE-2025-21293 8.8 Yes No No Microsoft Digest Authentication CVE-2025-21294 8.1 Yes No No Windows SPNEGO Extended Negotiation CVE-2025-21295 8.1 Yes No No BranchCache CVE-2025-21296 7.5 Yes No No Windows Remote Desktop Services CVE-2025-21297 8.1 Yes No No Windows OLE CVE-2025-21298 9.8 Yes Yes No Windows Kerberos CVE-2025-21299 7.1 Yes No No Windows UPnP Device Host CVE-2025-21300 7.5 No No No Windows Geolocation Service CVE-2025-21301 6.5 Yes No No Windows Telephony Service CVE-2025-21302 8.8 Yes No No Windows Telephony Service CVE-2025-21303 8.8 Yes No No Windows DWM Core Library CVE-2025-21304 7.8 Yes No No Windows Telephony Service CVE-2025-21305 8.8 Yes No No Windows Telephony Service CVE-2025-21306 8.8 Yes No No Reliable Multicast Transport Driver (RMCAST) CVE-2025-21307 9.8 Yes No Yes Windows Themes CVE-2025-21308 6.5 Yes No Yes Windows Remote Desktop Services CVE-2025-21309 8.1 Yes No No Windows Digital Media CVE-2025-21310 6.6 Yes No No Windows NTLM CVE-2025-21311 9.8 Yes No No Windows Smart Card CVE-2025-21312 2.4 Yes No No Windows Security Account Manager CVE-2025-21313 6.5 Yes No No Windows SmartScreen CVE-2025-21314 6.5 Yes No No Microsoft Brokering File System CVE-2025-21315 7.8 Yes No No Windows Kernel Memory CVE-2025-21316 5.5 Yes No No Windows Kernel Memory CVE-2025-21317 5.5 Yes No No Windows Kernel Memory CVE-2025-21318 5.5 Yes No No Windows Kernel Memory CVE-2025-21319 5.5 Yes No No Windows Kernel Memory CVE-2025-21320 5.5 Yes No No Windows Kernel Memory CVE-2025-21321 5.5 Yes No No Windows Kernel Memory CVE-2025-21323 5.5 Yes No No Windows Digital Media CVE-2025-21324 6.6 Yes No No Internet Explorer CVE-2025-21326 7.8 Yes No No Windows Digital Media CVE-2025-21327 6.6 Yes No No Windows MapUrlToZone CVE-2025-21328 4.3 Yes No No Windows MapUrlToZone CVE-2025-21329 4.3 Yes No No Windows Remote Desktop Services CVE-2025-21330 7.5 Yes No No Windows Installer CVE-2025-21331 7.3 Yes No No Windows MapUrlToZone CVE-2025-21332 4.3 No No No Windows Hyper-V NT Kernel Integration VSP CVE-2025-21333 7.8 Yes No No Windows Hyper-V NT Kernel Integration VSP CVE-2025-21334 7.8 Yes No No Windows Hyper-V NT Kernel Integration VSP CVE-2025-21335 7.8 Yes No No Windows Cryptographic Services CVE-2025-21336 5.6 Yes No No Windows Win32K - GRFX CVE-2025-21338 7.8 Yes No No Windows Telephony Service CVE-2025-21339 8.8 Yes No No Windows Hello CVE-2025-21340 5.5 Yes No No Windows Digital Media CVE-2025-21341 6.6 Yes No No Windows Web Threat Defense User Service CVE-2025-21343 7.5 Yes No No Microsoft Office SharePoint CVE-2025-21344 7.8 Yes No No Microsoft Office Visio CVE-2025-21345 7.8 Yes No No Microsoft Office CVE-2025-21346 7.1 Yes No No Microsoft Office SharePoint CVE-2025-21348 7.2 Yes No No Microsoft Office Excel CVE-2025-21354 7.8 Yes No No Microsoft Office Visio CVE-2025-21356 7.8 Yes No No Microsoft Office Outlook CVE-2025-21357 6.7 Yes No No Microsoft AutoUpdate (MAU) CVE-2025-21360 7.8 Yes No No Microsoft Office Outlook for Mac CVE-2025-21361 7.8 Yes No No Microsoft Office Excel CVE-2025-21362 7.8 Yes No No Microsoft Office Word CVE-2025-21363 7.8 Yes No No Microsoft Office Excel CVE-2025-21364 7.8 Yes No No Microsoft Office CVE-2025-21365 7.8 Yes No No Microsoft Office Access CVE-2025-21366 7.8 Yes No No Windows Virtualization-Based Security (VBS) Enclave CVE-2025-21370 7.8 Yes No No Microsoft Brokering File System CVE-2025-21372 7.8 Yes No No Windows Client-Side Caching (CSC) Service CVE-2025-21374 5.5 Yes No No Windows Client-Side Caching (CSC) Service CVE-2025-21378 7.8 Yes No No Azure Marketplace SaaS Resources CVE-2025-21380 8.8 Yes No No Microsoft Graphics Component CVE-2025-21382 7.8 Yes No No Microsoft Purview CVE-2025-21385 8.8 Yes No No Windows UPnP Device Host CVE-2025-21389 7.5 No No No Microsoft Office SharePoint CVE-2025-21393 6.3 Yes No No Microsoft Office Access CVE-2025-21395 7.8 Yes No No Microsoft Office OneNote CVE-2025-21402 7.8 Yes No No Microsoft Azure Gateway Manager CVE-2025-21403 6.4 Yes No No Visual Studio CVE-2025-21405 7.3 No No No Windows Telephony Service CVE-2025-21409 8.8 Yes No No Windows Telephony Service CVE-2025-21411 8.8 Yes No No Windows Telephony Service CVE-2025-21413 8.8 Yes No No Windows Telephony Service CVE-2025-21417 8.8 Yes No No We are republishing 2 non-Microsoft CVEs:
CNA Tag CVE FAQs? Workarounds? Mitigations? GitHub Visual Studio CVE-2024-50338 Yes No No CERT CC Windows Secure Boot CVE-2024-7344 Yes No No Security Update Guide Blog Posts
Date Blog Post November 12, 2024 Toward greater transparency: Publishing machine-readable CSAF files June 27, 2024 Toward greater transparency: Unveiling Cloud Service CVEs April 9, 2024 Toward greater transparency: Security Update Guide now shares CWEs for CVEs January 6, 2023 Publishing CBL-Mariner CVEs on the Security Update Guide CVRF API January 11, 2022 Coming Soon: New Security Update Guide Notification System February 9, 2021 Continuing to Listen: Good News about the Security Update Guide API January 13, 2021 Security Update Guide Supports CVEs Assigned by Industry Partners December 8, 2020 Security Update Guide: Let’s keep the conversation going November 9, 2020 Vulnerability Descriptions in the New Version of the Security Update Guide Relevant Resources
- The new Hotpatching feature is now generally available. Please see Hotpatching feature for Windows Server Azure Edition virtual machines (VMs) for more information.
- Windows 10 and Windows 11 updates are cumulative. The monthly security release includes all security fixes for vulnerabilities that affect Windows 10 and Windows 11, in addition to non-security updates. The updates are available via the Microsoft Update Catalog. For information on lifecycle and support dates for Windows 10 and Windows 11 operating systems, please see Windows Lifecycle Facts Sheet.
- Microsoft is improving Windows Release Notes. For more information, please see What's next for Windows release notes.
- A list of the latest servicing stack updates for each operating system can be found in ADV990001. This list will be updated whenever a new servicing stack update is released. It is important to install the latest servicing stack update.
- In addition to security changes for the vulnerabilities, updates include defense-in-depth updates to help improve security-related features.
- Customers running Windows Server 2008 R2, or Windows Server 2008 need to purchase the Extended Security Update to continue receiving security updates. See 4522133 for more information.
Known Issues
You can see these in more detail from the Deployments tab by selecting Known Issues column in the Edit Columns panel.
For more information about Windows Known Issues, please see Windows message center (links to currently-supported versions of Windows are in the left pane).
KB Article Applies To 5049981 Windows 10, version 21H2, Windows 10, version 22H2 5049983 Windows Server 2022 5049984 Windows Server 2022, 23H2 Edition (Server Core installation) 5050008 Windows 10, version 1809, Windows Server 2019 5050009 Windows 11, version 24H2 5050021 Windows 11, version 22H2, Windows 11, version 23H2 5050061 Windows Server 2008 (Security-only update) 5050063 Windows Server 2008 (Monthly Rollup)
