PT-2026-70941 · Notepad++ · Notepad++

CVE-2026-73250

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Published

2026-08-11

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Updated

2026-08-13

CVSS v4.0

5.4

Medium

VectorAV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Name of the Vulnerable Software and Affected Versions Notepad++ versions prior to 8.9.7
Description The Windows 11 x64 and ARM64 installer for this source code editor contains a command injection flaw. The installer passes the installation directory variable $INSTDIR from PowerEditor/installer/nppSetup.nsi into a PowerShell -Command string used by RegisterMSIX to invoke Add-AppxPackage. When the context menu component is selected, an attacker can use PowerShell subexpression syntax, such as $(), within the installation path to execute arbitrary commands in the security context of the installer.
Recommendations Update to version 8.9.7.

Exploit

Fix

Command Injection

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Weakness Enumeration

CWE-77

Related Identifiers

CVE-2026-73250
GHSA-GP2R-262H-9HGF

Affected Products

Notepad++