Notepad++: Authenticode verification bypass allows modified updater execution
cve-program · CVE-2026-85995
PublishedNotepad++ is a free and open-source source code editor. From 8.9.7 until 8.9.8, the Notepad++ updater and signature verification path can accept a modified GUP.exe file whose embedded certificate metadata remains present even though its Authenticode digest is invalid. An attacker who can replace or plant the updater-related file can cause Notepad++ to launch attacker-modified code when a user triggers the updater path, but the issue does not provide remote code execution by itself. This issue is fixed in version 8.9.8.
Read the publisher's advisoryAffected versions, risk and source history
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CVE-2026-85995 · CVE overview and exploitation status
cve-program · CVE-2026-85995
- https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-cx87-7hhq-m2j3
- https://github.com/notepad-plus-plus/notepad-plus-plus/commit/9edf40f725ce62b26c454905e39f0f7fdbbb3ffa
- https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8
- https://notepad-plus-plus.org/news/v898-released
Related changes
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