# KB5022346: January 2023 security update KB5022346, released January 10, 2023, fixes 49 CVEs across 5 products. One of them is being exploited (CVE-2023-21674); 1 on CISA KEV. Patch Radar priority: Patch now. - Web page: https://patchblox.com/security/fix/microsoft/kb5022346 - Platform: Microsoft - Released: Jan 10, 2023 - Priority: Patch now (Closes CVE-2023-21674, exploited (CISA KEV)) - CVEs: 49, exploited: 1, on CISA KEV: 1 - Vendor advisory: https://support.microsoft.com/help/5022346 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows 8.1 for 32-bit systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-32-bit-systems.md) | | | | [Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-x64-based-systems.md) | | | | [Windows RT 8.1](https://patchblox.com/security/data/product/microsoft/windows-rt-8.1.md) | | | | [Windows Server 2012 R2](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2.md) | | | | [Windows Server 2012 R2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2-server-core-installation.md) | | | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2023-21674](https://patchblox.com/security/data/cve/CVE-2023-21674.md) | Patch now | Windows ALPC | 8.8 | 0.3421 | CISA KEV | | [CVE-2023-21552](https://patchblox.com/security/data/cve/CVE-2023-21552.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0354 | More likely | | [CVE-2023-21543](https://patchblox.com/security/data/cve/CVE-2023-21543.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.0177 | | | [CVE-2023-21556](https://patchblox.com/security/data/cve/CVE-2023-21556.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.0150 | | | [CVE-2023-21546](https://patchblox.com/security/data/cve/CVE-2023-21546.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.0113 | | | [CVE-2023-21555](https://patchblox.com/security/data/cve/CVE-2023-21555.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.0113 | | | [CVE-2023-21679](https://patchblox.com/security/data/cve/CVE-2023-21679.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.0113 | | | [CVE-2023-21535](https://patchblox.com/security/data/cve/CVE-2023-21535.md) | Urgent | Windows Secure Socket Tunneling Protocol (SSTP) | 8.1 | 0.0111 | | | [CVE-2023-21548](https://patchblox.com/security/data/cve/CVE-2023-21548.md) | Urgent | Windows Secure Socket Tunneling Protocol (SSTP) | 8.1 | 0.0111 | | | [CVE-2023-21541](https://patchblox.com/security/data/cve/CVE-2023-21541.md) | Urgent | Windows Task Scheduler | 7.8 | 0.0058 | More likely | | [CVE-2023-21730](https://patchblox.com/security/data/cve/CVE-2023-21730.md) | Urgent | Windows Cryptographic Services | 7.8 | 0.0054 | | | [CVE-2023-21726](https://patchblox.com/security/data/cve/CVE-2023-21726.md) | Urgent | Windows Credential Manager | 7.8 | 0.0046 | More likely | | [CVE-2023-21532](https://patchblox.com/security/data/cve/CVE-2023-21532.md) | Urgent | Microsoft Graphics Component | 7.0 | 0.0046 | More likely | | [CVE-2023-21561](https://patchblox.com/security/data/cve/CVE-2023-21561.md) | Urgent | Windows Cryptographic Services | 7.8 | 0.0045 | | | [CVE-2023-21746](https://patchblox.com/security/data/cve/CVE-2023-21746.md) | High | Windows NTLM | 7.8 | 0.0243 | | | [CVE-2023-21557](https://patchblox.com/security/data/cve/CVE-2023-21557.md) | High | Windows LDAP - Lightweight Directory Access Protocol | 7.5 | 0.0208 | | | [CVE-2023-21757](https://patchblox.com/security/data/cve/CVE-2023-21757.md) | High | Windows Remote Access Service L2TP Driver | 7.5 | 0.0206 | | | [CVE-2023-21527](https://patchblox.com/security/data/cve/CVE-2023-21527.md) | High | Windows iSCSI | 7.5 | 0.0203 | | | [CVE-2023-21677](https://patchblox.com/security/data/cve/CVE-2023-21677.md) | High | Windows IKE Extension | 7.5 | 0.0203 | | | [CVE-2023-21683](https://patchblox.com/security/data/cve/CVE-2023-21683.md) | High | Windows IKE Extension | 7.5 | 0.0203 | | | [CVE-2023-21728](https://patchblox.com/security/data/cve/CVE-2023-21728.md) | High | Microsoft Local Security Authority Server (lsasrv) | 7.5 | 0.0203 | | | [CVE-2023-28297](https://patchblox.com/security/data/cve/CVE-2023-28297.md) | High | Windows RPC API | 8.8 | 0.0166 | | | [CVE-2023-21549](https://patchblox.com/security/data/cve/CVE-2023-21549.md) | High | Windows SMB | 8.8 | 0.0147 | Disclosed | | [CVE-2023-21681](https://patchblox.com/security/data/cve/CVE-2023-21681.md) | High | Microsoft WDAC OLE DB provider for SQL | 8.8 | 0.0141 | | | [CVE-2023-21732](https://patchblox.com/security/data/cve/CVE-2023-21732.md) | High | Windows ODBC Driver | 8.8 | 0.0141 | | | [CVE-2023-21675](https://patchblox.com/security/data/cve/CVE-2023-21675.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0085 | | | [CVE-2023-21747](https://patchblox.com/security/data/cve/CVE-2023-21747.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0085 | | | [CVE-2023-21748](https://patchblox.com/security/data/cve/CVE-2023-21748.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0085 | | | [CVE-2023-21749](https://patchblox.com/security/data/cve/CVE-2023-21749.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0083 | | | [CVE-2023-21772](https://patchblox.com/security/data/cve/CVE-2023-21772.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0074 | | | [CVE-2023-21774](https://patchblox.com/security/data/cve/CVE-2023-21774.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0074 | | | [CVE-2023-21750](https://patchblox.com/security/data/cve/CVE-2023-21750.md) | High | Windows Virtual Registry Provider | 7.1 | 0.0073 | | | [CVE-2023-21773](https://patchblox.com/security/data/cve/CVE-2023-21773.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0072 | | | [CVE-2023-21678](https://patchblox.com/security/data/cve/CVE-2023-21678.md) | High | Windows Print Spooler Components | 7.8 | 0.0060 | | | [CVE-2023-21739](https://patchblox.com/security/data/cve/CVE-2023-21739.md) | High | Microsoft Bluetooth Driver | 7.0 | 0.0058 | | | [CVE-2023-21760](https://patchblox.com/security/data/cve/CVE-2023-21760.md) | High | Windows Print Spooler Components | 7.1 | 0.0055 | | | [CVE-2023-21537](https://patchblox.com/security/data/cve/CVE-2023-21537.md) | High | Windows Message Queuing | 7.8 | 0.0054 | | | [CVE-2023-21680](https://patchblox.com/security/data/cve/CVE-2023-21680.md) | High | Microsoft Graphics Component | 7.8 | 0.0049 | | | [CVE-2023-21765](https://patchblox.com/security/data/cve/CVE-2023-21765.md) | High | Windows Print Spooler Components | 7.8 | 0.0048 | | | [CVE-2023-21558](https://patchblox.com/security/data/cve/CVE-2023-21558.md) | High | Windows Error Reporting | 7.8 | 0.0047 | | | [CVE-2023-21754](https://patchblox.com/security/data/cve/CVE-2023-21754.md) | High | Windows Management Instrumentation | 7.8 | 0.0047 | | | [CVE-2023-21767](https://patchblox.com/security/data/cve/CVE-2023-21767.md) | High | Windows Overlay Filter | 7.8 | 0.0047 | | | [CVE-2023-21524](https://patchblox.com/security/data/cve/CVE-2023-21524.md) | High | Windows Local Security Authority (LSA) | 7.8 | 0.0041 | | | [CVE-2023-21542](https://patchblox.com/security/data/cve/CVE-2023-21542.md) | High | Windows Installer | 7.0 | 0.0028 | | | [CVE-2023-21525](https://patchblox.com/security/data/cve/CVE-2023-21525.md) | Routine | Windows RPC API | 5.3 | 0.0155 | | | [CVE-2023-21563](https://patchblox.com/security/data/cve/CVE-2023-21563.md) | Routine | Windows BitLocker | 6.8 | 0.0150 | | | [CVE-2023-21682](https://patchblox.com/security/data/cve/CVE-2023-21682.md) | Routine | Windows Point-to-Point Tunneling Protocol | 5.3 | 0.0141 | | | [CVE-2023-21560](https://patchblox.com/security/data/cve/CVE-2023-21560.md) | Routine | Windows Boot Manager | 6.6 | 0.0117 | | | [CVE-2023-21776](https://patchblox.com/security/data/cve/CVE-2023-21776.md) | Routine | Windows Virtual Registry Provider | 5.5 | 0.0104 | | --- 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.