Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an unauthorized attacker to execute code over a network.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20841
https://www.theregister.com/2026/02/11/notepad_rce_flaw/
https://news.ycombinator.com/item?id=46971516
Source: Mitre, NVD
Published: 2026-02-10
Updated: 2026-02-11
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 8.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High
EPSS: 0.00076