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CVE-2026-73250— Notepad++: Install-time PowerShell command injection through installation path

Quick assessment

Affected
notepad-plus-plus notepad-plus-plus
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Notepad++是Notepad++组织开源的一款文本编辑及源代码处理工具。 Notepad++ 8.9.7之前版本存在命令注入漏洞，该漏洞源于安装程序将攻击者可控的安装目录传递给PowerShell命令，可能导致在安装程序安全上下文中执行命令。

CVSS 5.4 · Medium EPSS 0.19% · P8

Affected Version Matrix 1

VendorProduct Version RangeStatus
notepad-plus-plus notepad-plus-plus < 8.9.7 affected
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I. Basic Information for CVE-2026-73250

Vulnerability Information
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Vulnerability Title
Notepad++: Install-time PowerShell command injection through installation path
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Notepad++ 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Notepad++是Notepad++组织开源的一款文本编辑及源代码处理工具。 Notepad++ 8.9.7之前版本存在命令注入漏洞，该漏洞源于安装程序将攻击者可控的安装目录传递给PowerShell命令，可能导致在安装程序安全上下文中执行命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
notepad-plus-plus notepad-plus-plus < 8.9.7 -

II. Public POCs for CVE-2026-73250

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III. Intelligence Information for CVE-2026-73250

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Patches & Fixes for CVE-2026-73250 (1)

Vendor Advisories for CVE-2026-73250 (1)

Vendor Pages for CVE-2026-73250 (1)

IV. Related Vulnerabilities

Same product: notepad-plus-plus
Same vendor: notepad-plus-plus
Same weakness: CWE-77

V. Comments for CVE-2026-73250

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