CVE-2026-73250
Published:August 11, 2026
Updated:August 31, 2026
Notepad++ is a free and open-source source code editor. Prior to 8.9.7, the Notepad++ Windows 11 x64 and ARM64 installer passes the attacker-influenced installation directory "$INSTDIR" from PowerEditor/installer/nppSetup.nsi into a PowerShell "-Command" string used by RegisterMSIX to invoke Add-AppxPackage, allowing PowerShell subexpression syntax such as "$()" in the installation path to execute commands in the installer's security context when the context menu component is selected. This issue is fixed in version 8.9.7.
Affected Packages
https://github.com/notepad-plus-plus/notepad-plus-plus.git (GITHUB):
Affected version(s) >=v4.2.1 <v8.9.7Fix Suggestion:
Update to version v8.9.7Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.4
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
ACTIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Neutralization of Special Elements used in a Command ('Command Injection')
EPSS
Base Score:
0.13