# KB5073698: January 2026 security update KB5073698, released January 13, 2026, fixes 36 CVEs across 2 products. One of them is being exploited (CVE-2026-20805); 1 on CISA KEV. Patch Radar priority: Patch now. - Web page: https://patchblox.com/security/fix/microsoft/kb5073698 - Platform: Microsoft - Released: Jan 13, 2026 - Priority: Patch now (Closes CVE-2026-20805, exploited (CISA KEV)) - CVEs: 36, exploited: 1, on CISA KEV: 1 - Vendor advisory: https://support.microsoft.com/help/5073698 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows Server 2012](https://patchblox.com/security/data/product/microsoft/windows-server-2012.md) | | | | [Windows Server 2012 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2012-server-core-installation.md) | | | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2026-20805](https://patchblox.com/security/data/cve/CVE-2026-20805.md) | Patch now | Desktop Window Manager | 5.5 | 0.0746 | CISA KEV | | [CVE-2026-20860](https://patchblox.com/security/data/cve/CVE-2026-20860.md) | Urgent | Windows Ancillary Function Driver for WinSock | 7.8 | 0.0828 | More likely | | [CVE-2026-20840](https://patchblox.com/security/data/cve/CVE-2026-20840.md) | Urgent | Windows NTFS | 7.8 | 0.0459 | More likely | | [CVE-2026-20843](https://patchblox.com/security/data/cve/CVE-2026-20843.md) | Urgent | Windows Routing and Remote Access Service (RRAS) | 7.8 | 0.0342 | More likely | | [CVE-2026-20820](https://patchblox.com/security/data/cve/CVE-2026-20820.md) | Urgent | Windows Common Log File System Driver | 7.8 | 0.0256 | More likely | | [CVE-2026-20816](https://patchblox.com/security/data/cve/CVE-2026-20816.md) | Urgent | Windows Installer | 7.8 | 0.0244 | More likely | | [CVE-2026-20922](https://patchblox.com/security/data/cve/CVE-2026-20922.md) | Urgent | Windows NTFS | 7.8 | 0.0108 | More likely | | [CVE-2023-31096](https://patchblox.com/security/data/cve/CVE-2023-31096.md) | Urgent | Agere Windows Modem Driver | 7.8 | 0.0048 | Disclosed | | [CVE-2026-20929](https://patchblox.com/security/data/cve/CVE-2026-20929.md) | High | Windows HTTP.sys | 7.5 | 0.0287 | | | [CVE-2026-20875](https://patchblox.com/security/data/cve/CVE-2026-20875.md) | High | Windows Local Security Authority Subsystem Service (LSASS) | 7.5 | 0.0154 | | | [CVE-2026-20868](https://patchblox.com/security/data/cve/CVE-2026-20868.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.8 | 0.0139 | | | [CVE-2026-20921](https://patchblox.com/security/data/cve/CVE-2026-20921.md) | High | Windows SMB Server | 7.5 | 0.0118 | | | [CVE-2024-55414](https://patchblox.com/security/data/cve/CVE-2024-55414.md) | High | Windows Motorola Soft Modem Driver | 7.8 | 0.0114 | | | [CVE-2026-20856](https://patchblox.com/security/data/cve/CVE-2026-20856.md) | High | Windows Server Update Service | 8.1 | 0.0112 | | | [CVE-2026-20849](https://patchblox.com/security/data/cve/CVE-2026-20849.md) | High | Windows Kerberos | 7.5 | 0.0101 | | | [CVE-2026-20931](https://patchblox.com/security/data/cve/CVE-2026-20931.md) | High | Windows Telephony Service | 8.0 | 0.0085 | | | [CVE-2026-20919](https://patchblox.com/security/data/cve/CVE-2026-20919.md) | High | Windows SMB Server | 7.5 | 0.0080 | | | [CVE-2026-20926](https://patchblox.com/security/data/cve/CVE-2026-20926.md) | High | Windows SMB Server | 7.5 | 0.0080 | | | [CVE-2026-20848](https://patchblox.com/security/data/cve/CVE-2026-20848.md) | High | Windows SMB Server | 7.5 | 0.0075 | | | [CVE-2026-20934](https://patchblox.com/security/data/cve/CVE-2026-20934.md) | High | Windows SMB Server | 7.5 | 0.0075 | | | [CVE-2026-0386](https://patchblox.com/security/data/cve/CVE-2026-0386.md) | High | Windows Deployment Services | 7.5 | 0.0055 | | | [CVE-2026-20940](https://patchblox.com/security/data/cve/CVE-2026-20940.md) | High | Windows Cloud Files Mini Filter Driver | 7.8 | 0.0046 | | | [CVE-2026-20831](https://patchblox.com/security/data/cve/CVE-2026-20831.md) | High | Windows Ancillary Function Driver for WinSock | 7.8 | 0.0030 | | | [CVE-2026-20869](https://patchblox.com/security/data/cve/CVE-2026-20869.md) | High | Windows Local Session Manager (LSM) | 7.0 | 0.0029 | | | [CVE-2026-20872](https://patchblox.com/security/data/cve/CVE-2026-20872.md) | Routine | Windows NTLM | 6.5 | 0.1979 | | | [CVE-2026-20925](https://patchblox.com/security/data/cve/CVE-2026-20925.md) | Routine | Windows NTLM | 6.5 | 0.1793 | | | [CVE-2026-20847](https://patchblox.com/security/data/cve/CVE-2026-20847.md) | Routine | Windows Shell | 6.5 | 0.0134 | | | [CVE-2026-21265](https://patchblox.com/security/data/cve/CVE-2026-21265.md) | Routine | Windows Secure Boot | 6.4 | 0.0110 | Disclosed | | [CVE-2026-20927](https://patchblox.com/security/data/cve/CVE-2026-20927.md) | Routine | Windows SMB Server | 5.3 | 0.0091 | | | [CVE-2026-20824](https://patchblox.com/security/data/cve/CVE-2026-20824.md) | Routine | Windows Remote Assistance | 5.5 | 0.0086 | | | [CVE-2026-20834](https://patchblox.com/security/data/cve/CVE-2026-20834.md) | Routine | Windows Shell | 4.6 | 0.0074 | | | [CVE-2026-20821](https://patchblox.com/security/data/cve/CVE-2026-20821.md) | Routine | Windows Remote Procedure Call | 6.2 | 0.0070 | | | [CVE-2026-20828](https://patchblox.com/security/data/cve/CVE-2026-20828.md) | Routine | Windows Internet Connection Sharing (ICS) | 4.6 | 0.0064 | | | [CVE-2026-20833](https://patchblox.com/security/data/cve/CVE-2026-20833.md) | Routine | Windows Kerberos | 5.5 | 0.0053 | | | [CVE-2026-20936](https://patchblox.com/security/data/cve/CVE-2026-20936.md) | Routine | Windows NDIS | 4.3 | 0.0048 | | | [CVE-2026-20839](https://patchblox.com/security/data/cve/CVE-2026-20839.md) | Routine | Windows Client-Side Caching (CSC) Service | 5.5 | 0.0048 | | --- 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 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.