Description
Notepad3 through 6.25.822.1 contains a DLL search-order hijacking vulnerability in the About-dialog code path in src/Notepad3.c. The application calls LoadLibrary(L"MSFTEDIT.DLL") with a bare DLL name, which allows a local attacker to place a malicious MSFTEDIT.DLL in the application directory or another preferred DLL search location and achieve arbitrary code execution in the context of the user when the About dialog is opened.
References
https://github.com/rizonesoft/Notepad3/issues/5605
https://github.com/rizonesoft/Notepad3/pull/5606
https://github.com/rizonesoft/Notepad3/issues/5605
Weaknesses
134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS impact metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8 · High
Information
Source identifier
Vulnerability status
Analyzed
Published
2026-07-02T21:16:56.353Z
3 months agoLast modified
2026-07-08T18:49:50.400Z
3 months ago