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Microsoft Security Response CenterCVE-2026-20841

Windows Notepad App Remote Code Execution Vulnerability

Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code locally.

Read the vendor bulletin Get alerts for Windows Notepad
7.8CVSS out of 10High severity
Scope

What the vendor says is affected

  • Windows Notepad

Versions the vendor lists as fixed

  • 11.2512.26.0
Next step

What the vendor recommends

Release Notes

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-20841View CVSS, KEV, EPSS, and threat context
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