CVE-2026-62902

This vulnerability is like a “plug-in” system in .NET that can accidentally accept code from untrusted sources. If that happens and someone interacts with the affected application, an attacker may be able to quietly grab confidential information across the network.

This matters if your organization uses Microsoft .NET (including .NET 8.0 or .NET 9.0) and Visual Studio (2022 or 2026) in a way that can load or incorporate functionality from external, untrusted sources. It’s reachable in the default configuration, but it still requires user interaction before the data can be exposed.

Practical reachability gate: only a risk if your environment/app can incorporate untrusted external functionality and the user interaction step occurs.

This is RED because it’s a newly reported patch affecting commonly used development/runtime components, and threat-actor activity connected to this patch (Lazarus group) increases the likelihood of real-world targeting. Attackers look for setups where .NET incorporates untrusted external functionality, then rely on the required user interaction to trigger data exposure.