Yet another abuse of the missing "CrossDevice.Streaming.Source.dll" DLL!

After CVE-2025-24076 / CVE-2025-24076 found by Compass Security, Researcher Oscar Zanotti Campo found another vulnerability that he could exploit using the built-in misconfigured COM class referencing this DLL. This is CVE-2026-21508. 🔥

👉 https://0xc4r.github.io/posts/CVE-2026-21508/
👉 https://github.com/0xc4r/CVE-2026-21508_POC/
👉 https://blog.0patch.com/2026/03/micropatches-released-for-windows.html

#Windows #cve #cve_2026_21508 #vulnerability