What is CVE-2026-20841?

CVE-2026-20841 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Notepad App Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-20841 cover?

CVE-2026-20841 covers the following CVE IDs: CVE-2026-20841. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-20841?

CVE-2026-20841 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-20841?

CVE-2026-20841 affects 1 product, including: Windows Notepad.

CVE-2026-20841HighCVSS 7.8

Windows Notepad App Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

February 10, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-20841 →

📋 Description

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

🎯 Affected products1

Windows Notepad

✅ Remediation

KBRelease Notes (Security Update) — fixed build 11.2512.26.0

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20841
patchhttps://apps.microsoft.com/detail/9MSMLRH6LZF3