# CVE-2020-1237: Windows Kernel Elevation of Privilege Vulnerability CVE-2020-1237 is fixed in 24 products on 1 platform, first by KB4561602, released June 9, 2020. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2020-1237 - Priority: High - CVSS: 7.8 (Important) - EPSS: 0.0324 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: Jun 9, 2020 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1237 ## Description

An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions.

To exploit the vulnerability, a locally authenticated attacker could run a specially crafted application.

The security update addresses the vulnerability by ensuring the Windows Kernel properly handles objects in memory.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1709 for 32-bit Systems | 16299.1932 | [KB4561602](https://patchblox.com/security/data/fix/microsoft/kb4561602.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1709 for ARM64-based Systems | 16299.1932 | [KB4561602](https://patchblox.com/security/data/fix/microsoft/kb4561602.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1709 for x64-based Systems | 16299.1932 | [KB4561602](https://patchblox.com/security/data/fix/microsoft/kb4561602.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1803 for 32-bit Systems | 17134.1550 | [KB4561621](https://patchblox.com/security/data/fix/microsoft/kb4561621.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1803 for ARM64-based Systems | 17134.1550 | [KB4561621](https://patchblox.com/security/data/fix/microsoft/kb4561621.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1803 for x64-based Systems | 17134.1550 | [KB4561621](https://patchblox.com/security/data/fix/microsoft/kb4561621.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1809 for 32-bit Systems | 17763.1282 | [KB4561608](https://patchblox.com/security/data/fix/microsoft/kb4561608.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1809 for ARM64-based Systems | 17763.1282 | [KB4561608](https://patchblox.com/security/data/fix/microsoft/kb4561608.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1809 for x64-based Systems | 17763.1282 | [KB4561608](https://patchblox.com/security/data/fix/microsoft/kb4561608.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1903 for 32-bit Systems | | [KB4560960](https://patchblox.com/security/data/fix/microsoft/kb4560960.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1903 for ARM64-based Systems | | [KB4560960](https://patchblox.com/security/data/fix/microsoft/kb4560960.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1903 for x64-based Systems | | [KB4560960](https://patchblox.com/security/data/fix/microsoft/kb4560960.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1909 for 32-bit Systems | | [KB4560960](https://patchblox.com/security/data/fix/microsoft/kb4560960.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1909 for ARM64-based Systems | | [KB4560960](https://patchblox.com/security/data/fix/microsoft/kb4560960.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 1909 for x64-based Systems | | [KB4560960](https://patchblox.com/security/data/fix/microsoft/kb4560960.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 2004 for 32-bit Systems | 19041.329 | [KB4557957](https://patchblox.com/security/data/fix/microsoft/kb4557957.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 2004 for ARM64-based Systems | 19041.329 | [KB4557957](https://patchblox.com/security/data/fix/microsoft/kb4557957.md) | Jun 9, 2020 | | Microsoft | Windows 10 Version 2004 for x64-based Systems | 19041.329 | [KB4557957](https://patchblox.com/security/data/fix/microsoft/kb4557957.md) | Jun 9, 2020 | | Microsoft | Windows Server 2019 | 17763.1282 | [KB4561608](https://patchblox.com/security/data/fix/microsoft/kb4561608.md) | Jun 9, 2020 | | Microsoft | Windows Server 2019 (Server Core installation) | 17763.1282 | [KB4561608](https://patchblox.com/security/data/fix/microsoft/kb4561608.md) | Jun 9, 2020 | | Microsoft | Windows Server, version 1803 (Server Core Installation) | 17134.1550 | [KB4561621](https://patchblox.com/security/data/fix/microsoft/kb4561621.md) | Jun 9, 2020 | | Microsoft | Windows Server, version 1903 (Server Core installation) | | [KB4560960](https://patchblox.com/security/data/fix/microsoft/kb4560960.md) | Jun 9, 2020 | | Microsoft | Windows Server, version 1909 (Server Core installation) | | [KB4560960](https://patchblox.com/security/data/fix/microsoft/kb4560960.md) | Jun 9, 2020 | | Microsoft | Windows Server, version 2004 (Server Core installation) | 19041.329 | [KB4557957](https://patchblox.com/security/data/fix/microsoft/kb4557957.md) | Jun 9, 2020 | --- 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