# CVE-2020-0809: Media Foundation Memory Corruption Vulnerability CVE-2020-0809 is fixed in 26 products on 1 platform, first by KB4540670, released March 10, 2020. It is not reported as exploited. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/cve/CVE-2020-0809 - Priority: Urgent - CVSS: 7.8 (Critical) - EPSS: 0.0561 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Less Likely - Published: Mar 10, 2020 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-0809 ## Description

A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in memory. An attacker who successfully exploited the vulnerability could install programs; view, change, or delete data; or create new accounts with full user rights.

There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit a malicious webpage.

The security update addresses the vulnerability by correcting how Windows Media Foundation handles objects in memory.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.3564 | [KB4540670](https://patchblox.com/security/data/fix/microsoft/kb4540670.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.3564 | [KB4540670](https://patchblox.com/security/data/fix/microsoft/kb4540670.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1709 for 32-bit Systems | 16299.1747 | [KB4540681](https://patchblox.com/security/data/fix/microsoft/kb4540681.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1709 for ARM64-based Systems | 16299.1747 | [KB4540681](https://patchblox.com/security/data/fix/microsoft/kb4540681.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1709 for x64-based Systems | 16299.1747 | [KB4540681](https://patchblox.com/security/data/fix/microsoft/kb4540681.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1803 for 32-bit Systems | 17134.1365 | [KB4540689](https://patchblox.com/security/data/fix/microsoft/kb4540689.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1803 for ARM64-based Systems | 17134.1365 | [KB4540689](https://patchblox.com/security/data/fix/microsoft/kb4540689.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1803 for x64-based Systems | 17134.1365 | [KB4540689](https://patchblox.com/security/data/fix/microsoft/kb4540689.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1809 for 32-bit Systems | 17763.1098 | [KB4538461](https://patchblox.com/security/data/fix/microsoft/kb4538461.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1809 for ARM64-based Systems | 17763.1098 | [KB4538461](https://patchblox.com/security/data/fix/microsoft/kb4538461.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1809 for x64-based Systems | 17763.1098 | [KB4538461](https://patchblox.com/security/data/fix/microsoft/kb4538461.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1903 for 32-bit Systems | | [KB4540673](https://patchblox.com/security/data/fix/microsoft/kb4540673.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1903 for ARM64-based Systems | | [KB4540673](https://patchblox.com/security/data/fix/microsoft/kb4540673.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1903 for x64-based Systems | | [KB4540673](https://patchblox.com/security/data/fix/microsoft/kb4540673.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1909 for 32-bit Systems | | [KB4540673](https://patchblox.com/security/data/fix/microsoft/kb4540673.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1909 for ARM64-based Systems | | [KB4540673](https://patchblox.com/security/data/fix/microsoft/kb4540673.md) | Mar 10, 2020 | | Microsoft | Windows 10 Version 1909 for x64-based Systems | | [KB4540673](https://patchblox.com/security/data/fix/microsoft/kb4540673.md) | Mar 10, 2020 | | Microsoft | Windows 10 for 32-bit Systems | 10240.18519 | [KB4540693](https://patchblox.com/security/data/fix/microsoft/kb4540693.md) | Mar 10, 2020 | | Microsoft | Windows 10 for x64-based Systems | 10240.18519 | [KB4540693](https://patchblox.com/security/data/fix/microsoft/kb4540693.md) | Mar 10, 2020 | | Microsoft | Windows Server 2016 | 14393.3564 | [KB4540670](https://patchblox.com/security/data/fix/microsoft/kb4540670.md) | Mar 10, 2020 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.3564 | [KB4540670](https://patchblox.com/security/data/fix/microsoft/kb4540670.md) | Mar 10, 2020 | | Microsoft | Windows Server 2019 | 17763.1098 | [KB4538461](https://patchblox.com/security/data/fix/microsoft/kb4538461.md) | Mar 10, 2020 | | Microsoft | Windows Server 2019 (Server Core installation) | 17763.1098 | [KB4538461](https://patchblox.com/security/data/fix/microsoft/kb4538461.md) | Mar 10, 2020 | | Microsoft | Windows Server, version 1803 (Server Core Installation) | 17134.1365 | [KB4540689](https://patchblox.com/security/data/fix/microsoft/kb4540689.md) | Mar 10, 2020 | | Microsoft | Windows Server, version 1903 (Server Core installation) | | [KB4540673](https://patchblox.com/security/data/fix/microsoft/kb4540673.md) | Mar 10, 2020 | | Microsoft | Windows Server, version 1909 (Server Core installation) | | [KB4540673](https://patchblox.com/security/data/fix/microsoft/kb4540673.md) | Mar 10, 2020 | --- 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