# KB5050049: January 2025 security update KB5050049, released January 14, 2025, fixes 78 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported. - Web page: https://patchblox.com/security/fix/microsoft/kb5050049 - Platform: Microsoft - Released: Jan 14, 2025 - Priority: Urgent (Closes CVE-2025-21298, exploitation more likely) - CVEs: 78, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://support.microsoft.com/help/5050049 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1.md) | | | | [Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1-server-core-installation.md) | | | ## 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-2025-21269](https://patchblox.com/security/data/cve/CVE-2025-21269.md) | Urgent | Windows MapUrlToZone | 4.3 | 0.0450 | 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-2025-21268](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-2025-21294](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-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-2025-21230](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-2025-21300](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-2025-21220](https://patchblox.com/security/data/cve/CVE-2025-21220.md) | High | Windows Message Queuing | 7.5 | 0.0211 | | | [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-2025-21252](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-2025-21266](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-2025-21287](https://patchblox.com/security/data/cve/CVE-2025-21287.md) | High | Windows Installer | 7.8 | 0.0055 | | | [CVE-2025-21338](https://patchblox.com/security/data/cve/CVE-2025-21338.md) | High | Windows Win32K - GRFX | 7.8 | 0.0048 | | | [CVE-2025-21217](https://patchblox.com/security/data/cve/CVE-2025-21217.md) | Routine | Windows NTLM | 6.5 | 0.0198 | | | [CVE-2025-21242](https://patchblox.com/security/data/cve/CVE-2025-21242.md) | Routine | Windows Kerberos | 5.9 | 0.0161 | | | [CVE-2025-21332](https://patchblox.com/security/data/cve/CVE-2025-21332.md) | Routine | Windows MapUrlToZone | 4.3 | 0.0150 | | | [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-2025-21226](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-2025-21232](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-2025-21261](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-2025-21272](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-2025-21336](https://patchblox.com/security/data/cve/CVE-2025-21336.md) | Routine | Windows Cryptographic Services | 5.6 | 0.0067 | | --- Data as of 2026-11-09T07:25:28Z 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.