# KB5050008: January 2025 cumulative update for Windows 10 1809 KB5050008, released January 14, 2025, fixes 118 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/fix/microsoft/kb5050008 - Platform: Microsoft - Released: Jan 14, 2025 - Priority: Urgent (Closes CVE-2025-21298, exploitation more likely) - CVEs: 118, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://support.microsoft.com/help/5050008 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows 10 Version 1809 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1809-for-32-bit-systems.md) | | 17763.6775 | | [Windows 10 Version 1809 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1809-for-x64-based-systems.md) | | 17763.6775 | | [Windows Server 2019](https://patchblox.com/security/data/product/microsoft/windows-server-2019.md) | | 17763.6775 | | [Windows Server 2019 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2019-server-core-installation.md) | | 17763.6775 | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2025-21298](https://patchblox.com/security/data/cve/CVE-2025-21298.md) | Urgent | Windows OLE | 9.8 | 0.7437 | More likely | | [CVE-2025-21309](https://patchblox.com/security/data/cve/CVE-2025-21309.md) | Urgent | Windows Remote Desktop Services | 8.1 | 0.1506 | More likely | | [CVE-2025-21269](https://patchblox.com/security/data/cve/CVE-2025-21269.md) | Urgent | Windows MapUrlToZone | 4.3 | 0.0450 | More likely | | [CVE-2025-21219](https://patchblox.com/security/data/cve/CVE-2025-21219.md) | Urgent | Windows MapUrlToZone | 4.3 | 0.0295 | More likely | | [CVE-2025-21189](https://patchblox.com/security/data/cve/CVE-2025-21189.md) | Urgent | Windows MapUrlToZone | 4.3 | 0.0291 | More likely | | [CVE-2025-21299](https://patchblox.com/security/data/cve/CVE-2025-21299.md) | Urgent | Windows Kerberos | 7.1 | 0.0223 | More likely | | [CVE-2025-21268](https://patchblox.com/security/data/cve/CVE-2025-21268.md) | Urgent | Windows MapUrlToZone | 4.3 | 0.0195 | More likely | | [CVE-2025-21307](https://patchblox.com/security/data/cve/CVE-2025-21307.md) | Urgent | Reliable Multicast Transport Driver (RMCAST) | 9.8 | 0.0194 | | | [CVE-2025-21295](https://patchblox.com/security/data/cve/CVE-2025-21295.md) | Urgent | Windows SPNEGO Extended Negotiation | 8.1 | 0.0163 | | | [CVE-2025-21328](https://patchblox.com/security/data/cve/CVE-2025-21328.md) | Urgent | Windows MapUrlToZone | 4.3 | 0.0149 | More likely | | [CVE-2025-21329](https://patchblox.com/security/data/cve/CVE-2025-21329.md) | Urgent | Windows MapUrlToZone | 4.3 | 0.0149 | More likely | | [CVE-2025-21297](https://patchblox.com/security/data/cve/CVE-2025-21297.md) | Urgent | Windows Remote Desktop Services | 8.1 | 0.0146 | | | [CVE-2025-21314](https://patchblox.com/security/data/cve/CVE-2025-21314.md) | Urgent | Windows SmartScreen | 6.5 | 0.0139 | More likely | | [CVE-2025-21294](https://patchblox.com/security/data/cve/CVE-2025-21294.md) | Urgent | Microsoft Digest Authentication | 8.1 | 0.0123 | | | [CVE-2025-21210](https://patchblox.com/security/data/cve/CVE-2025-21210.md) | Urgent | Windows Virtual Trusted Platform Module | 4.2 | 0.0112 | More likely | | [CVE-2024-49120](https://patchblox.com/security/data/cve/CVE-2024-49120.md) | Urgent | Windows Remote Desktop Services | 8.1 | 0.0110 | | | [CVE-2025-21292](https://patchblox.com/security/data/cve/CVE-2025-21292.md) | Urgent | Microsoft Windows Search Component | 8.8 | 0.0083 | More likely | | [CVE-2025-21296](https://patchblox.com/security/data/cve/CVE-2025-21296.md) | Urgent | BranchCache | 7.5 | 0.0079 | | | [CVE-2025-21285](https://patchblox.com/security/data/cve/CVE-2025-21285.md) | High | Windows Message Queuing | 7.5 | 0.5616 | | | [CVE-2025-21277](https://patchblox.com/security/data/cve/CVE-2025-21277.md) | High | Windows Message Queuing | 7.5 | 0.3906 | | | [CVE-2025-21293](https://patchblox.com/security/data/cve/CVE-2025-21293.md) | High | Active Directory Domain Services | 8.8 | 0.1499 | | | [CVE-2025-21230](https://patchblox.com/security/data/cve/CVE-2025-21230.md) | High | Windows Message Queuing | 7.5 | 0.0272 | | | [CVE-2025-21231](https://patchblox.com/security/data/cve/CVE-2025-21231.md) | High | IP Helper | 7.5 | 0.0263 | | | [CVE-2025-21251](https://patchblox.com/security/data/cve/CVE-2025-21251.md) | High | Windows Message Queuing | 7.5 | 0.0263 | | | [CVE-2025-21218](https://patchblox.com/security/data/cve/CVE-2025-21218.md) | High | Windows Kerberos | 7.5 | 0.0263 | | | [CVE-2025-21300](https://patchblox.com/security/data/cve/CVE-2025-21300.md) | High | Windows UPnP Device Host | 7.5 | 0.0257 | | | [CVE-2025-21276](https://patchblox.com/security/data/cve/CVE-2025-21276.md) | High | Windows MapUrlToZone | 7.5 | 0.0246 | | | [CVE-2025-21270](https://patchblox.com/security/data/cve/CVE-2025-21270.md) | High | Windows Message Queuing | 7.5 | 0.0243 | | | [CVE-2025-21289](https://patchblox.com/security/data/cve/CVE-2025-21289.md) | High | Windows Message Queuing | 7.5 | 0.0243 | | | [CVE-2025-21290](https://patchblox.com/security/data/cve/CVE-2025-21290.md) | High | Windows Message Queuing | 7.5 | 0.0243 | | | [CVE-2025-21207](https://patchblox.com/security/data/cve/CVE-2025-21207.md) | High | Windows Connected Devices Platform Service | 7.5 | 0.0214 | | | [CVE-2025-21220](https://patchblox.com/security/data/cve/CVE-2025-21220.md) | High | Windows Message Queuing | 7.5 | 0.0211 | | | [CVE-2025-21330](https://patchblox.com/security/data/cve/CVE-2025-21330.md) | High | Windows Remote Desktop Services | 7.5 | 0.0209 | | | [CVE-2025-21389](https://patchblox.com/security/data/cve/CVE-2025-21389.md) | High | Windows UPnP Device Host | 7.5 | 0.0197 | | | [CVE-2025-21233](https://patchblox.com/security/data/cve/CVE-2025-21233.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21236](https://patchblox.com/security/data/cve/CVE-2025-21236.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21237](https://patchblox.com/security/data/cve/CVE-2025-21237.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21238](https://patchblox.com/security/data/cve/CVE-2025-21238.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21240](https://patchblox.com/security/data/cve/CVE-2025-21240.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21243](https://patchblox.com/security/data/cve/CVE-2025-21243.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21244](https://patchblox.com/security/data/cve/CVE-2025-21244.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21245](https://patchblox.com/security/data/cve/CVE-2025-21245.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21246](https://patchblox.com/security/data/cve/CVE-2025-21246.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21250](https://patchblox.com/security/data/cve/CVE-2025-21250.md) | High | Windows Telephony Service | 8.8 | 0.0171 | | | [CVE-2025-21223](https://patchblox.com/security/data/cve/CVE-2025-21223.md) | High | Windows Telephony Service | 8.8 | 0.0164 | | | [CVE-2025-21239](https://patchblox.com/security/data/cve/CVE-2025-21239.md) | High | Windows Telephony Service | 8.8 | 0.0151 | | | [CVE-2025-21241](https://patchblox.com/security/data/cve/CVE-2025-21241.md) | High | Windows Telephony Service | 8.8 | 0.0151 | | | [CVE-2025-21248](https://patchblox.com/security/data/cve/CVE-2025-21248.md) | High | Windows Telephony Service | 8.8 | 0.0151 | | | [CVE-2025-21252](https://patchblox.com/security/data/cve/CVE-2025-21252.md) | High | Windows Telephony Service | 8.8 | 0.0144 | | | [CVE-2025-21302](https://patchblox.com/security/data/cve/CVE-2025-21302.md) | High | Windows Telephony Service | 8.8 | 0.0144 | | | [CVE-2025-21303](https://patchblox.com/security/data/cve/CVE-2025-21303.md) | High | Windows Telephony Service | 8.8 | 0.0144 | | | [CVE-2025-21305](https://patchblox.com/security/data/cve/CVE-2025-21305.md) | High | Windows Telephony Service | 8.8 | 0.0144 | | | [CVE-2025-21306](https://patchblox.com/security/data/cve/CVE-2025-21306.md) | High | Windows Telephony Service | 8.8 | 0.0144 | | | [CVE-2025-21291](https://patchblox.com/security/data/cve/CVE-2025-21291.md) | High | Windows Direct Show | 8.8 | 0.0142 | | | [CVE-2025-21266](https://patchblox.com/security/data/cve/CVE-2025-21266.md) | High | Windows Telephony Service | 8.8 | 0.0129 | | | [CVE-2025-21273](https://patchblox.com/security/data/cve/CVE-2025-21273.md) | High | Windows Telephony Service | 8.8 | 0.0129 | | | [CVE-2025-21282](https://patchblox.com/security/data/cve/CVE-2025-21282.md) | High | Windows Telephony Service | 8.8 | 0.0129 | | | [CVE-2025-21286](https://patchblox.com/security/data/cve/CVE-2025-21286.md) | High | Windows Telephony Service | 8.8 | 0.0129 | | | [CVE-2025-21417](https://patchblox.com/security/data/cve/CVE-2025-21417.md) | High | Windows Telephony Service | 8.8 | 0.0119 | | | [CVE-2025-21339](https://patchblox.com/security/data/cve/CVE-2025-21339.md) | High | Windows Telephony Service | 8.8 | 0.0112 | | | [CVE-2025-21409](https://patchblox.com/security/data/cve/CVE-2025-21409.md) | High | Windows Telephony Service | 8.8 | 0.0112 | | | [CVE-2025-21411](https://patchblox.com/security/data/cve/CVE-2025-21411.md) | High | Windows Telephony Service | 8.8 | 0.0112 | | | [CVE-2025-21413](https://patchblox.com/security/data/cve/CVE-2025-21413.md) | High | Windows Telephony Service | 8.8 | 0.0112 | | | [CVE-2025-21331](https://patchblox.com/security/data/cve/CVE-2025-21331.md) | High | Windows Installer | 7.3 | 0.0106 | | | [CVE-2025-21281](https://patchblox.com/security/data/cve/CVE-2025-21281.md) | High | Windows COM | 7.8 | 0.0061 | | | [CVE-2025-21304](https://patchblox.com/security/data/cve/CVE-2025-21304.md) | High | Windows DWM Core Library | 7.8 | 0.0061 | | | [CVE-2025-21378](https://patchblox.com/security/data/cve/CVE-2025-21378.md) | High | Windows Client-Side Caching (CSC) Service | 7.8 | 0.0057 | | | [CVE-2025-21287](https://patchblox.com/security/data/cve/CVE-2025-21287.md) | High | Windows Installer | 7.8 | 0.0055 | | | [CVE-2025-21271](https://patchblox.com/security/data/cve/CVE-2025-21271.md) | High | Windows Cloud Files Mini Filter Driver | 7.8 | 0.0055 | | | [CVE-2025-21382](https://patchblox.com/security/data/cve/CVE-2025-21382.md) | High | Microsoft Graphics Component | 7.8 | 0.0051 | | | [CVE-2025-21338](https://patchblox.com/security/data/cve/CVE-2025-21338.md) | High | Windows Win32K - GRFX | 7.8 | 0.0048 | | | [CVE-2025-21308](https://patchblox.com/security/data/cve/CVE-2025-21308.md) | Routine | Windows Themes | 6.5 | 0.0216 | Disclosed | | [CVE-2025-21217](https://patchblox.com/security/data/cve/CVE-2025-21217.md) | Routine | Windows NTLM | 6.5 | 0.0198 | | | [CVE-2025-21225](https://patchblox.com/security/data/cve/CVE-2025-21225.md) | Routine | Windows Remote Desktop Services | 5.9 | 0.0165 | | | [CVE-2025-21242](https://patchblox.com/security/data/cve/CVE-2025-21242.md) | Routine | Windows Kerberos | 5.9 | 0.0161 | | | [CVE-2025-21301](https://patchblox.com/security/data/cve/CVE-2025-21301.md) | Routine | Windows Geolocation Service | 6.5 | 0.0153 | | | [CVE-2025-21332](https://patchblox.com/security/data/cve/CVE-2025-21332.md) | Routine | Windows MapUrlToZone | 4.3 | 0.0150 | | | [CVE-2024-7344](https://patchblox.com/security/data/cve/CVE-2024-7344.md) | Routine | Windows Secure Boot | 6.7 | 0.0108 | | | [CVE-2025-21316](https://patchblox.com/security/data/cve/CVE-2025-21316.md) | Routine | Windows Kernel Memory | 5.5 | 0.0099 | | | [CVE-2025-21318](https://patchblox.com/security/data/cve/CVE-2025-21318.md) | Routine | Windows Kernel Memory | 5.5 | 0.0099 | | | [CVE-2025-21319](https://patchblox.com/security/data/cve/CVE-2025-21319.md) | Routine | Windows Kernel Memory | 5.5 | 0.0099 | | | [CVE-2025-21320](https://patchblox.com/security/data/cve/CVE-2025-21320.md) | Routine | Windows Kernel Memory | 5.5 | 0.0099 | | | [CVE-2025-21321](https://patchblox.com/security/data/cve/CVE-2025-21321.md) | Routine | Windows Kernel Memory | 5.5 | 0.0099 | | | [CVE-2025-21323](https://patchblox.com/security/data/cve/CVE-2025-21323.md) | Routine | Windows Kernel Memory | 5.5 | 0.0090 | | | [CVE-2025-21202](https://patchblox.com/security/data/cve/CVE-2025-21202.md) | Routine | Windows Recovery Environment Agent | 6.1 | 0.0089 | | | [CVE-2025-21226](https://patchblox.com/security/data/cve/CVE-2025-21226.md) | Routine | Windows Digital Media | 6.6 | 0.0088 | | | [CVE-2025-21227](https://patchblox.com/security/data/cve/CVE-2025-21227.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21228](https://patchblox.com/security/data/cve/CVE-2025-21228.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21229](https://patchblox.com/security/data/cve/CVE-2025-21229.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21232](https://patchblox.com/security/data/cve/CVE-2025-21232.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21249](https://patchblox.com/security/data/cve/CVE-2025-21249.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21255](https://patchblox.com/security/data/cve/CVE-2025-21255.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21256](https://patchblox.com/security/data/cve/CVE-2025-21256.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21258](https://patchblox.com/security/data/cve/CVE-2025-21258.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21260](https://patchblox.com/security/data/cve/CVE-2025-21260.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21310](https://patchblox.com/security/data/cve/CVE-2025-21310.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21324](https://patchblox.com/security/data/cve/CVE-2025-21324.md) | Routine | Windows Digital Media | 6.6 | 0.0085 | | | [CVE-2025-21215](https://patchblox.com/security/data/cve/CVE-2025-21215.md) | Routine | Windows Boot Manager | 4.6 | 0.0081 | | | [CVE-2025-21274](https://patchblox.com/security/data/cve/CVE-2025-21274.md) | Routine | Windows Event Tracing | 5.5 | 0.0079 | | | [CVE-2025-21211](https://patchblox.com/security/data/cve/CVE-2025-21211.md) | Routine | Windows Boot Loader | 6.8 | 0.0078 | | | [CVE-2025-21261](https://patchblox.com/security/data/cve/CVE-2025-21261.md) | Routine | Windows Digital Media | 6.6 | 0.0077 | | | [CVE-2025-21263](https://patchblox.com/security/data/cve/CVE-2025-21263.md) | Routine | Windows Digital Media | 6.6 | 0.0077 | | | [CVE-2025-21265](https://patchblox.com/security/data/cve/CVE-2025-21265.md) | Routine | Windows Digital Media | 6.6 | 0.0077 | | | [CVE-2025-21327](https://patchblox.com/security/data/cve/CVE-2025-21327.md) | Routine | Windows Digital Media | 6.6 | 0.0077 | | | [CVE-2025-21193](https://patchblox.com/security/data/cve/CVE-2025-21193.md) | Routine | Active Directory Federation Services | 6.5 | 0.0074 | | | [CVE-2025-21312](https://patchblox.com/security/data/cve/CVE-2025-21312.md) | Routine | Windows Smart Card | 2.4 | 0.0074 | | | [CVE-2025-21257](https://patchblox.com/security/data/cve/CVE-2025-21257.md) | Routine | Windows WLAN Auto Config Service | 5.5 | 0.0073 | | | [CVE-2025-21213](https://patchblox.com/security/data/cve/CVE-2025-21213.md) | Routine | Windows BitLocker | 4.6 | 0.0072 | | | [CVE-2025-21272](https://patchblox.com/security/data/cve/CVE-2025-21272.md) | Routine | Windows COM | 6.5 | 0.0071 | | | [CVE-2025-21288](https://patchblox.com/security/data/cve/CVE-2025-21288.md) | Routine | Windows COM | 6.5 | 0.0071 | | | [CVE-2025-21341](https://patchblox.com/security/data/cve/CVE-2025-21341.md) | Routine | Windows Digital Media | 6.6 | 0.0071 | | | [CVE-2025-21214](https://patchblox.com/security/data/cve/CVE-2025-21214.md) | Routine | Windows BitLocker | 4.2 | 0.0070 | | | [CVE-2025-21280](https://patchblox.com/security/data/cve/CVE-2025-21280.md) | Routine | Windows Virtual Trusted Platform Module | 5.5 | 0.0067 | | | [CVE-2025-21284](https://patchblox.com/security/data/cve/CVE-2025-21284.md) | Routine | Windows Virtual Trusted Platform Module | 5.5 | 0.0067 | | | [CVE-2025-21336](https://patchblox.com/security/data/cve/CVE-2025-21336.md) | Routine | Windows Cryptographic Services | 5.6 | 0.0067 | | | [CVE-2025-21374](https://patchblox.com/security/data/cve/CVE-2025-21374.md) | Routine | Windows Client-Side Caching (CSC) Service | 5.5 | 0.0059 | | | [CVE-2025-21278](https://patchblox.com/security/data/cve/CVE-2025-21278.md) | Routine | Windows Remote Desktop Services | 6.2 | 0.0057 | | | [CVE-2025-21340](https://patchblox.com/security/data/cve/CVE-2025-21340.md) | Routine | Windows Hello | 5.5 | 0.0046 | | --- Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data 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.