Microsoft Just Patched a Major Security Vulnerability for This Popular Windows App

Users could be tricked into running arbitrary code, but the issue was patched last week.
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Microsoft patches concerning Windows 11 Notepad security flaw - Markdown issues could have let hackers slip in malware without warning

Microsoft patches Windows 11 Notepad RCE flaw CVE-2026-20841 Vulnerability exploited Markdown links to execute malicious code with user permissions Patch Tuesday update fixes issue; versions 11.2510 ...

Microsoft plugs remote code vulnerability in Notepad app on Windows 11

Microsoft fixes a critical Notepad vulnerability in Windows 11 that could allow remote code execution via malicious Markdown files. Here are the details ...