CVE-2022-41089

Your fortnightly rundown of AppSec vulnerabilities, new hacking techniques, and other cybersecurity news

# Microsoft Security Advisory CVE-2022-41089: .NET Remote Code Execution Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET Core 3.1, .NET 6.0., and .NET 7.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A remote code execution vulnerability exists in .NET Core 3.1, .NET 6.0, and .NET 7.0, where a malicious actor could cause a user to run arbitrary code as a result of parsing maliciously crafted xps files. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/242 ### <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 7.0 WinForms or WPF application running on .NET 7.0.0 or earlier. * Any .NET 6.0 W...

Here's what you need to patch now, including six critical updates for Microsoft's final Patch Tuesday of the year.

A remote code execution vulnerability exists when Microsoft .NET Framework fails to properly validate input before loading libraries. An attacker who successfully exploited this vulnerability could take control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. To exploit the vulnerability, an attacker would first need to access the local system with the ability to execute a malicious application. The security update addresses the vulnerability by correcting how .NET validates input on library load.