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CVE-2026-85995

Notepad++: Authenticode verification bypass allows modified updater execution

CVSS 3.1 7.3 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-85995

Published

Notepad++ 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 advisory

Affected versions, risk and source history

cve-program · CVE-2026-85995

Published

notepad-plus-plus

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "notepad-plus-plus",
                    "product": "notepad-plus-plus",
                    "versions": [
                        {
                            "version": "< 8.9.8",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON