Vulnerability in Windows 11 Notepad Allows Execution of Malicious Files via Markdown Links

A vulnerability identified as CVE-2026-20841 affects the Notepad application in Windows 11. It allows an attacker to execute an executable file via a Markdown link contained in a document opened with Notepad. The flaw exploits a mechanism for processing links in this format. No details on the discovery or correction date are mentioned. The impact concerns Windows 11 systems using Notepad to view malicious Markdown files.