# KB5025273: April 2023 security update KB5025273, released April 11, 2023, fixes 40 CVEs across 4 products. 2 of them are being exploited (CVE-2023-28252); 2 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported. - Web page: https://patchblox.com/security/fix/microsoft/kb5025273 - Platform: Microsoft - Released: Apr 11, 2023 - Priority: Patch now (Closes CVE-2023-28252, exploited (CISA KEV, ransomware)) - CVEs: 40, exploited: 2, on CISA KEV: 2 - Vendor advisory: https://support.microsoft.com/help/5025273 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows Server 2008 for 32-bit Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2.md) | | | | [Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2-server-core-installation.md) | | | | [Windows Server 2008 for x64-based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2.md) | | | | [Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2-server-core-installation.md) | | | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2023-28252](https://patchblox.com/security/data/cve/CVE-2023-28252.md) | Patch now | Windows Common Log File System Driver | 7.8 | 0.4889 | CISA KEV, Ransomware | | [CVE-2023-28229](https://patchblox.com/security/data/cve/CVE-2023-28229.md) | Patch now | Windows CNG Key Isolation Service | 7.0 | 0.0167 | CISA KEV | | [CVE-2023-21554](https://patchblox.com/security/data/cve/CVE-2023-21554.md) | Urgent | Windows Message Queuing | 9.8 | 0.9541 | More likely | | [CVE-2023-28231](https://patchblox.com/security/data/cve/CVE-2023-28231.md) | Urgent | Windows DHCP Server | 8.8 | 0.3662 | More likely | | [CVE-2023-28219](https://patchblox.com/security/data/cve/CVE-2023-28219.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.1498 | More likely | | [CVE-2023-28220](https://patchblox.com/security/data/cve/CVE-2023-28220.md) | Urgent | Windows Layer 2 Tunneling Protocol | 8.1 | 0.1498 | More likely | | [CVE-2023-28218](https://patchblox.com/security/data/cve/CVE-2023-28218.md) | Urgent | Windows Ancillary Function Driver for WinSock | 7.0 | 0.1240 | More likely | | [CVE-2023-28227](https://patchblox.com/security/data/cve/CVE-2023-28227.md) | Urgent | Microsoft Bluetooth Driver | 7.5 | 0.0659 | More likely | | [CVE-2023-28266](https://patchblox.com/security/data/cve/CVE-2023-28266.md) | Urgent | Windows Common Log File System Driver | 5.5 | 0.0436 | More likely | | [CVE-2023-24912](https://patchblox.com/security/data/cve/CVE-2023-24912.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0357 | More likely | | [CVE-2023-28250](https://patchblox.com/security/data/cve/CVE-2023-28250.md) | Urgent | Windows PGM | 9.8 | 0.0203 | | | [CVE-2023-28232](https://patchblox.com/security/data/cve/CVE-2023-28232.md) | Urgent | Windows Point-to-Point Tunneling Protocol | 7.5 | 0.0091 | | | [CVE-2023-28302](https://patchblox.com/security/data/cve/CVE-2023-28302.md) | High | Windows Active Directory | 7.5 | 0.9257 | | | [CVE-2023-21769](https://patchblox.com/security/data/cve/CVE-2023-21769.md) | High | Windows Message Queuing | 7.5 | 0.8867 | | | [CVE-2023-28244](https://patchblox.com/security/data/cve/CVE-2023-28244.md) | High | Windows Kerberos | 8.1 | 0.0292 | | | [CVE-2023-28293](https://patchblox.com/security/data/cve/CVE-2023-28293.md) | High | Windows Kernel | 7.8 | 0.0287 | | | [CVE-2023-28241](https://patchblox.com/security/data/cve/CVE-2023-28241.md) | High | Windows Secure Socket Tunneling Protocol (SSTP) | 7.5 | 0.0199 | | | [CVE-2023-28217](https://patchblox.com/security/data/cve/CVE-2023-28217.md) | High | Windows Network Address Translation (NAT) | 7.5 | 0.0194 | | | [CVE-2023-21727](https://patchblox.com/security/data/cve/CVE-2023-21727.md) | High | Windows RPC API | 8.8 | 0.0164 | | | [CVE-2023-28268](https://patchblox.com/security/data/cve/CVE-2023-28268.md) | High | Windows Netlogon | 8.1 | 0.0149 | | | [CVE-2023-28275](https://patchblox.com/security/data/cve/CVE-2023-28275.md) | High | Microsoft WDAC OLE DB provider for SQL | 8.8 | 0.0146 | | | [CVE-2023-28254](https://patchblox.com/security/data/cve/CVE-2023-28254.md) | High | Microsoft Windows DNS | 7.2 | 0.0144 | | | [CVE-2023-28240](https://patchblox.com/security/data/cve/CVE-2023-28240.md) | High | Windows Network Load Balancing | 8.8 | 0.0075 | | | [CVE-2023-28222](https://patchblox.com/security/data/cve/CVE-2023-28222.md) | High | Windows Kernel | 7.1 | 0.0068 | | | [CVE-2023-28272](https://patchblox.com/security/data/cve/CVE-2023-28272.md) | High | Windows Kernel | 7.8 | 0.0049 | | | [CVE-2023-28216](https://patchblox.com/security/data/cve/CVE-2023-28216.md) | High | Windows ALPC | 7.0 | 0.0037 | | | [CVE-2023-21729](https://patchblox.com/security/data/cve/CVE-2023-21729.md) | Routine | Windows RPC API | 4.3 | 0.0135 | | | [CVE-2023-28271](https://patchblox.com/security/data/cve/CVE-2023-28271.md) | Routine | Windows Kernel | 5.5 | 0.0116 | | | [CVE-2023-28223](https://patchblox.com/security/data/cve/CVE-2023-28223.md) | Routine | Microsoft Windows DNS | 6.6 | 0.0113 | | | [CVE-2023-28278](https://patchblox.com/security/data/cve/CVE-2023-28278.md) | Routine | Microsoft Windows DNS | 6.6 | 0.0085 | | | [CVE-2023-28305](https://patchblox.com/security/data/cve/CVE-2023-28305.md) | Routine | Microsoft Windows DNS | 6.6 | 0.0085 | | | [CVE-2023-28306](https://patchblox.com/security/data/cve/CVE-2023-28306.md) | Routine | Microsoft Windows DNS | 6.6 | 0.0085 | | | [CVE-2023-28307](https://patchblox.com/security/data/cve/CVE-2023-28307.md) | Routine | Microsoft Windows DNS | 6.6 | 0.0085 | | | [CVE-2023-28308](https://patchblox.com/security/data/cve/CVE-2023-28308.md) | Routine | Microsoft Windows DNS | 6.6 | 0.0085 | | | [CVE-2023-28255](https://patchblox.com/security/data/cve/CVE-2023-28255.md) | Routine | Microsoft Windows DNS | 6.6 | 0.0084 | | | [CVE-2023-28256](https://patchblox.com/security/data/cve/CVE-2023-28256.md) | Routine | Microsoft Windows DNS | 6.6 | 0.0084 | | | [CVE-2023-28298](https://patchblox.com/security/data/cve/CVE-2023-28298.md) | Routine | Windows Kernel | 5.5 | 0.0057 | | | [CVE-2023-28253](https://patchblox.com/security/data/cve/CVE-2023-28253.md) | Routine | Windows Kernel | 5.5 | 0.0056 | | | [CVE-2023-28276](https://patchblox.com/security/data/cve/CVE-2023-28276.md) | Routine | Windows Group Policy | 4.4 | 0.0046 | | | [CVE-2023-28228](https://patchblox.com/security/data/cve/CVE-2023-28228.md) | Routine | Windows RDP Client | 5.5 | 0.0045 | | --- Data as of 2026-11-07T06:34:28Z 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