ID:12409 - Exploit for Command Injection in Windows Notepad - CVE-2026-20841

Link to public exploit:

Vulnerability description

The vulnerability allows a remote attacker to execute arbitrary commands on the system.

The vulnerability exists due to insufficient input validation in Windows Notepad App. A remote attacker can trick a victim into clicking a malicious link inside a Markdown file opened in Notepad and execute arbitrary commands.

Remediation