Detections
Analytics

CVE-2026-20841

high

Description

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

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20841

https://www.helpnetsecurity.com/2026/02/12/windows-notepad-markdown-feature-opens-door-to-rce-cve-2026-20841/

https://www.theregister.com/2026/02/11/notepad_rce_flaw/

https://www.bleepingcomputer.com/news/microsoft/windows-11-notepad-flaw-let-files-execute-silently-via-markdown-links/

https://news.ycombinator.com/item?id=46971516

Details

Source: Mitre, NVD

Published: 2026-02-10

Updated: 2026-02-25

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00076