# KB5051980: February 2025 cumulative update for Windows Server 23H2 KB5051980, released February 11, 2025, fixes 34 CVEs in Windows Server 2022, 23H2 Edition (Server Core installation) (build 25398.1425). 2 of them are being exploited (CVE-2025-21391); 2 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported. - Web page: https://patchblox.com/security/fix/microsoft/kb5051980 - Platform: Microsoft - Released: Feb 11, 2025 - Priority: Patch now (Closes CVE-2025-21391, exploited (CISA KEV)) - CVEs: 34, exploited: 2, on CISA KEV: 2 - Vendor advisory: https://support.microsoft.com/help/5051980 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows Server 2022, 23H2 Edition (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2022-23h2-edition-server-core-installation.md) | | 25398.1425 | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2025-21391](https://patchblox.com/security/data/cve/CVE-2025-21391.md) | Patch now | Windows Storage | 7.1 | 0.0228 | CISA KEV | | [CVE-2025-21418](https://patchblox.com/security/data/cve/CVE-2025-21418.md) | Patch now | Windows Ancillary Function Driver for WinSock | 7.8 | 0.0213 | CISA KEV | | [CVE-2025-21377](https://patchblox.com/security/data/cve/CVE-2025-21377.md) | Urgent | Windows NTLM | 6.5 | 0.3993 | Disclosed | | [CVE-2025-21376](https://patchblox.com/security/data/cve/CVE-2025-21376.md) | Urgent | Windows LDAP - Lightweight Directory Access Protocol | 8.1 | 0.0931 | More likely | | [CVE-2025-21420](https://patchblox.com/security/data/cve/CVE-2025-21420.md) | Urgent | Windows Disk Cleanup Tool | 7.8 | 0.0367 | More likely | | [CVE-2025-21358](https://patchblox.com/security/data/cve/CVE-2025-21358.md) | Urgent | Windows CoreMessaging | 7.8 | 0.0076 | More likely | | [CVE-2025-21419](https://patchblox.com/security/data/cve/CVE-2025-21419.md) | Urgent | Windows Setup Files Cleanup | 7.1 | 0.0072 | More likely | | [CVE-2025-21367](https://patchblox.com/security/data/cve/CVE-2025-21367.md) | Urgent | Windows Win32 Kernel Subsystem | 7.8 | 0.0064 | More likely | | [CVE-2025-21414](https://patchblox.com/security/data/cve/CVE-2025-21414.md) | Urgent | Windows DWM Core Library | 7.0 | 0.0061 | More likely | | [CVE-2025-21184](https://patchblox.com/security/data/cve/CVE-2025-21184.md) | Urgent | Windows CoreMessaging | 7.0 | 0.0061 | More likely | | [CVE-2025-21181](https://patchblox.com/security/data/cve/CVE-2025-21181.md) | High | Windows Message Queuing | 7.5 | 0.0348 | | | [CVE-2025-21351](https://patchblox.com/security/data/cve/CVE-2025-21351.md) | High | Active Directory Domain Services | 7.5 | 0.0247 | | | [CVE-2025-21371](https://patchblox.com/security/data/cve/CVE-2025-21371.md) | High | Windows Telephony Service | 8.8 | 0.0243 | | | [CVE-2025-21368](https://patchblox.com/security/data/cve/CVE-2025-21368.md) | High | Microsoft Digest Authentication | 8.8 | 0.0215 | | | [CVE-2025-21369](https://patchblox.com/security/data/cve/CVE-2025-21369.md) | High | Microsoft Digest Authentication | 8.8 | 0.0215 | | | [CVE-2025-21406](https://patchblox.com/security/data/cve/CVE-2025-21406.md) | High | Windows Telephony Service | 8.8 | 0.0182 | | | [CVE-2025-21407](https://patchblox.com/security/data/cve/CVE-2025-21407.md) | High | Windows Telephony Service | 8.8 | 0.0182 | | | [CVE-2025-21410](https://patchblox.com/security/data/cve/CVE-2025-21410.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.8 | 0.0182 | | | [CVE-2025-21190](https://patchblox.com/security/data/cve/CVE-2025-21190.md) | High | Windows Telephony Service | 8.8 | 0.0181 | | | [CVE-2025-21200](https://patchblox.com/security/data/cve/CVE-2025-21200.md) | High | Windows Telephony Service | 8.8 | 0.0181 | | | [CVE-2025-21201](https://patchblox.com/security/data/cve/CVE-2025-21201.md) | High | Windows Telephony Server | 8.8 | 0.0181 | | | [CVE-2025-21208](https://patchblox.com/security/data/cve/CVE-2025-21208.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.8 | 0.0181 | | | [CVE-2025-21373](https://patchblox.com/security/data/cve/CVE-2025-21373.md) | High | Windows Installer | 7.8 | 0.0080 | | | [CVE-2025-26634](https://patchblox.com/security/data/cve/CVE-2025-26634.md) | High | Windows Core Messaging | 7.5 | 0.0067 | | | [CVE-2025-21375](https://patchblox.com/security/data/cve/CVE-2025-21375.md) | High | Microsoft Streaming Service | 7.8 | 0.0065 | | | [CVE-2025-21359](https://patchblox.com/security/data/cve/CVE-2025-21359.md) | High | Windows Kernel | 7.8 | 0.0056 | | | [CVE-2025-21350](https://patchblox.com/security/data/cve/CVE-2025-21350.md) | Routine | Windows Kerberos | 5.9 | 0.0213 | | | [CVE-2025-21349](https://patchblox.com/security/data/cve/CVE-2025-21349.md) | Routine | Windows Remote Desktop Services | 6.8 | 0.0114 | | | [CVE-2025-21254](https://patchblox.com/security/data/cve/CVE-2025-21254.md) | Routine | Windows Internet Connection Sharing (ICS) | 6.5 | 0.0104 | | | [CVE-2025-21352](https://patchblox.com/security/data/cve/CVE-2025-21352.md) | Routine | Windows Internet Connection Sharing (ICS) | 6.5 | 0.0104 | | | [CVE-2025-21212](https://patchblox.com/security/data/cve/CVE-2025-21212.md) | Routine | Windows Internet Connection Sharing (ICS) | 6.5 | 0.0103 | | | [CVE-2025-21216](https://patchblox.com/security/data/cve/CVE-2025-21216.md) | Routine | Windows Internet Connection Sharing (ICS) | 6.5 | 0.0103 | | | [CVE-2025-21347](https://patchblox.com/security/data/cve/CVE-2025-21347.md) | Routine | Windows Update Stack | 6.0 | 0.0066 | | | [CVE-2025-21337](https://patchblox.com/security/data/cve/CVE-2025-21337.md) | Routine | Microsoft Windows | 3.3 | 0.0061 | | --- Data as of 2026-11-07T12:40:37Z 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 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.