#Microsoft Windows Codecs Library

**According to the CVSS score, the attack vector is Local. Why does the CVE title indicate that this is a Remote Code Execution?** The word **Remote** in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. For example, when the score indicates that the **Attack Vector** is **Local** and **User Interaction** is **Required**, this could describe an exploit in which an attacker, through social engineering, convinces a victim to download and open a specially crafted file from a website which leads to a local attack on their computer.

**How could this vulnerability affect my system** A crafted image file could cause a crash in Explorer during browsing of the directory containing the file. **How do I get the updated app?** The Microsoft Store will automatically update affected customers. Alternatively, customers can get the update immediately; see here for details. It is possible for customers to disable automatic updates for the Microsoft Store. The Microsoft Store will not automatically install this update for those customers. **My system is in a disconnected environment; is it vulnerable?** Customers using the Microsoft Store for Business and Microsoft Store for Education can get this update through their organizations. **How can I check if the update is installed?** If your device manufacturer preinstalled this app, package versions **1.0.43421.0** and later contain this update. If you purchased this app from the Microsoft Store, package versions **1.0.43422.0** and later contain this update. You can ch...

**How do I get the updated app?** The Microsoft Store will automatically update affected customers. Alternatively, customers can get the update immediately; see here for details. It is possible for customers to disable automatic updates for the Microsoft Store. The Microsoft Store will not automatically install this update for those customers. **My system is in a disconnected environment; is it vulnerable?** Customers using the Microsoft Store for Business and Microsoft Store for Education can get this update through their organizations. **How can I check if the update is installed?** If your device manufacturer preinstalled this app, package versions **2.0.23022.0** and later contain this update. If you purchased this app from the Microsoft Store, package versions **2.0.23022.0** and later contain this update. You can check the package version in PowerShell: `Get-AppxPackage -Name Microsoft.HEVCVideoExtension*`

**What type of information could be disclosed by this vulnerability?** The type of information that could be disclosed if an attacker successfully exploited this vulnerability is uninitialized memory.

**How do I get the updated app?** The Microsoft Store will automatically update affected customers. Alternatively, customers can get the update immediately; see here for details. It is possible for customers to disable automatic updates for the Microsoft Store. The Microsoft Store will not automatically install this update for those customers. **My system is in a disconnected environment; is it vulnerable?** Customers using the Microsoft Store for Business and Microsoft Store for Education can get this update through their organizations. **How can I check if the update is installed?** If your device manufacturer preinstalled this app, package versions **2.0.23022.0** and later contain this update. If you purchased this app from the Microsoft Store, package versions **2.0.23022.0** and later contain this update. You can check the package version in PowerShell: `Get-AppxPackage -Name Microsoft.HEVCVideoExtension*`

**How do I get the updated app?** The Microsoft Store will automatically update affected customers. Alternatively, customers can get the update immediately; see here for details. It is possible for customers to disable automatic updates for the Microsoft Store. The Microsoft Store will not automatically install this update for those customers. **My system is in a disconnected environment; is it vulnerable?** Customers using the Microsoft Store for Business and Microsoft Store for Education can get this update through their organizations. **How can I check if the update is installed?** If your device manufacturer preinstalled this app, package versions **2.0.23022.0** and later contain this update. If you purchased this app from the Microsoft Store, package versions **2.0.23022.0** and later contain this update. You can check the package version in PowerShell: `Get-AppxPackage -Name Microsoft.HEVCVideoExtension*`

**How do I get the updated app?** The Microsoft Store will automatically update affected customers. Alternatively, customers can get the update immediately; see here for details. It is possible for customers to disable automatic updates for the Microsoft Store. The Microsoft Store will not automatically install this update for those customers. **My system is in a disconnected environment; is it vulnerable?** Customers using the Microsoft Store for Business and Microsoft Store for Education can get this update through their organizations. **How can I check if the update is installed?** If your device manufacturer preinstalled this app, package versions **2.0.23022.0** and later contain this update. If you purchased this app from the Microsoft Store, package versions **2.0.23022.0** and later contain this update. You can check the package version in PowerShell: `Get-AppxPackage -Name Microsoft.HEVCVideoExtension*`

*How do I get the updated app?* The Microsoft Store will automatically update affected customers. Alternatively, customers can get the update immediately; see here for details. It is possible for customers to disable automatic updates for the Microsoft Store. The Microsoft Store will not automatically install this update for those customers. *My system is in a disconnected environment; is it vulnerable?* Customers using the Microsoft Store for Business and Microsoft Store for Education can get this update through their organizations. *How can I check if the update is installed?* If your device manufacturer preinstalled this app, package versions *1.0.42091.0* and later contain this update. If you purchased this app from the Microsoft Store, package versions *1.0.42094.0* and later contain this update. You can check the package version in PowerShell: Get-AppxPackage -Name Microsoft.HEVCVideoExtension*