# KB5022338: January 2023 security update KB5022338, released January 10, 2023, fixes 40 CVEs across 4 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/kb5022338 - Platform: Microsoft - Released: Jan 10, 2023 - Priority: Urgent (Closes CVE-2023-21552, exploitation more likely) - CVEs: 40, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://support.microsoft.com/help/5022338 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows 7 for 32-bit Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-7-for-32-bit-systems-service-pack-1.md) | | | | [Windows 7 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/windows-7-for-x64-based-systems-service-pack-1.md) | | | | [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-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 | 0.0167 | | | [CVE-2023-21556](https://patchblox.com/security/data/cve/CVE-2023-21556.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.0142 | | | [CVE-2023-21546](https://patchblox.com/security/data/cve/CVE-2023-21546.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.0107 | | | [CVE-2023-21555](https://patchblox.com/security/data/cve/CVE-2023-21555.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.0107 | | | [CVE-2023-21679](https://patchblox.com/security/data/cve/CVE-2023-21679.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.0107 | | | [CVE-2023-21548](https://patchblox.com/security/data/cve/CVE-2023-21548.md) | Urgent | Windows Secure Socket Tunneling Protocol (SSTP) | 8.1 | 0.0105 | | | [CVE-2023-21541](https://patchblox.com/security/data/cve/CVE-2023-21541.md) | Urgent | Windows Task Scheduler | 7.8 | 0.0053 | More likely | | [CVE-2023-21730](https://patchblox.com/security/data/cve/CVE-2023-21730.md) | Urgent | Windows Cryptographic Services | 7.8 | 0.0049 | | | [CVE-2023-21726](https://patchblox.com/security/data/cve/CVE-2023-21726.md) | Urgent | Windows Credential Manager | 7.8 | 0.0046 | More likely | | [CVE-2023-21561](https://patchblox.com/security/data/cve/CVE-2023-21561.md) | Urgent | Windows Cryptographic Services | 7.8 | 0.0046 | | | [CVE-2023-21532](https://patchblox.com/security/data/cve/CVE-2023-21532.md) | Urgent | Microsoft Graphics Component | 7.0 | 0.0042 | More likely | | [CVE-2023-21752](https://patchblox.com/security/data/cve/CVE-2023-21752.md) | High | Windows Backup Engine | 7.1 | 0.0555 | | | [CVE-2023-21746](https://patchblox.com/security/data/cve/CVE-2023-21746.md) | High | Windows NTLM | 7.8 | 0.0250 | | | [CVE-2023-21557](https://patchblox.com/security/data/cve/CVE-2023-21557.md) | High | Windows LDAP - Lightweight Directory Access Protocol | 7.5 | 0.0219 | | | [CVE-2023-21527](https://patchblox.com/security/data/cve/CVE-2023-21527.md) | High | Windows iSCSI | 7.5 | 0.0214 | | | [CVE-2023-21728](https://patchblox.com/security/data/cve/CVE-2023-21728.md) | High | Microsoft Local Security Authority Server (lsasrv) | 7.5 | 0.0214 | | | [CVE-2023-21757](https://patchblox.com/security/data/cve/CVE-2023-21757.md) | High | Windows Remote Access Service L2TP Driver | 7.5 | 0.0214 | | | [CVE-2023-21681](https://patchblox.com/security/data/cve/CVE-2023-21681.md) | High | Microsoft WDAC OLE DB provider for SQL | 8.8 | 0.0149 | | | [CVE-2023-21732](https://patchblox.com/security/data/cve/CVE-2023-21732.md) | High | Windows ODBC Driver | 8.8 | 0.0149 | | | [CVE-2023-21675](https://patchblox.com/security/data/cve/CVE-2023-21675.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0087 | | | [CVE-2023-21747](https://patchblox.com/security/data/cve/CVE-2023-21747.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0087 | | | [CVE-2023-21748](https://patchblox.com/security/data/cve/CVE-2023-21748.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0087 | | | [CVE-2023-21749](https://patchblox.com/security/data/cve/CVE-2023-21749.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0085 | | | [CVE-2023-21772](https://patchblox.com/security/data/cve/CVE-2023-21772.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0076 | | | [CVE-2023-21774](https://patchblox.com/security/data/cve/CVE-2023-21774.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0076 | | | [CVE-2023-21750](https://patchblox.com/security/data/cve/CVE-2023-21750.md) | High | Windows Virtual Registry Provider | 7.1 | 0.0075 | | | [CVE-2023-21773](https://patchblox.com/security/data/cve/CVE-2023-21773.md) | High | Windows Virtual Registry Provider | 7.8 | 0.0074 | | | [CVE-2023-21537](https://patchblox.com/security/data/cve/CVE-2023-21537.md) | High | Windows Message Queuing | 7.8 | 0.0056 | | | [CVE-2023-21760](https://patchblox.com/security/data/cve/CVE-2023-21760.md) | High | Windows Print Spooler Components | 7.1 | 0.0056 | | | [CVE-2023-21678](https://patchblox.com/security/data/cve/CVE-2023-21678.md) | High | Windows Print Spooler Components | 7.8 | 0.0055 | | | [CVE-2023-21680](https://patchblox.com/security/data/cve/CVE-2023-21680.md) | High | Microsoft Graphics Component | 7.8 | 0.0050 | | | [CVE-2023-21754](https://patchblox.com/security/data/cve/CVE-2023-21754.md) | High | Windows Management Instrumentation | 7.8 | 0.0049 | | | [CVE-2023-21765](https://patchblox.com/security/data/cve/CVE-2023-21765.md) | High | Windows Print Spooler Components | 7.8 | 0.0049 | | | [CVE-2023-21542](https://patchblox.com/security/data/cve/CVE-2023-21542.md) | High | Windows Installer | 7.0 | 0.0029 | | | [CVE-2023-21525](https://patchblox.com/security/data/cve/CVE-2023-21525.md) | Routine | Windows RPC API | 5.3 | 0.0163 | | | [CVE-2023-21563](https://patchblox.com/security/data/cve/CVE-2023-21563.md) | Routine | Windows BitLocker | 6.8 | 0.0149 | | | [CVE-2023-21682](https://patchblox.com/security/data/cve/CVE-2023-21682.md) | Routine | Windows Point-to-Point Tunneling Protocol | 5.3 | 0.0149 | | | [CVE-2023-21560](https://patchblox.com/security/data/cve/CVE-2023-21560.md) | Routine | Windows Boot Manager | 6.6 | 0.0120 | | | [CVE-2023-21776](https://patchblox.com/security/data/cve/CVE-2023-21776.md) | Routine | Windows Virtual Registry Provider | 5.5 | 0.0107 | | --- Data as of 2026-11-10T20:03:11Z UTC. 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