CVE-2026-25926— Notepad++ has an Untrusted Search 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++是中国台湾侯今吾（Don Ho）个人开发者的一款开源的纯文本编辑器。 Notepad++ 8.9.2之前版本存在代码问题漏洞，该漏洞源于启动Windows Explorer时未使用绝对可执行路径，可能导致任意代码执行。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-25926
Vulnerability Information
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Vulnerability Title
Notepad++ has an Untrusted Search Path
Source: CVE Program / CVE List V5
Vulnerability Description
Notepad++ is a free and open-source source code editor. An Unsafe Search Path vulnerability (CWE-426) exists in versions prior to 8.9.2 when launching Windows Explorer without an absolute executable path. This may allow execution of a malicious explorer.exe if an attacker can control the process working directory. Under certain conditions, this could lead to arbitrary code execution in the context of the running application. Version 8.9.2 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可信的搜索路径
Source: CVE Program / CVE List V5
Vulnerability Title
Notepad++ 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Notepad++是中国台湾侯今吾（Don Ho）个人开发者的一款开源的纯文本编辑器。 Notepad++ 8.9.2之前版本存在代码问题漏洞，该漏洞源于启动Windows Explorer时未使用绝对可执行路径，可能导致任意代码执行。
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 | < 8.9.2 | - |
|
II. Public POCs for CVE-2026-25926
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-25926 (1)
IV. Related Vulnerabilities
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Same vendor: notepad-plus-plus
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CVE-2026-85995
Notepad++: Authenticode verification bypass allows modified -
CVE-2026-86056
Notepad++: Null pointer dereference in NPPM_SAVESESSION mess -
CVE-2026-77605
Notepad++ “Run by system” executes *.txt.cmd when user selec -
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Notepad++: Stack Buffer Overflow in `NppParameters::writeSes -
CVE-2026-85288
Notepad++: Shortcuts.xml macro HMAC bypass still reachable v
Same weakness: CWE-426
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Untrusted Search Path (PATH Hijacking) in fuse-archive
V. Comments for CVE-2026-25926
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