🔐 CVE Alert

CVE-2026-77605

HIGH 7.8

Notepad++ “Run by system” executes *.txt.cmd when user selected *.txt (target confusion → command execution)

CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th

Notepad++ is a free and open-source source code editor. Prior to 8.9.8, the Folder as Workspace Run by system action in Notepad++ can resolve a different sibling file than the file selected by the user. When an attacker places a command script whose name is the selected text-file path with .cmd appended, and the user invokes Run by system on the text file on Windows 10 or Windows 11, Notepad++ can execute the sibling script as the current user instead of opening the selected file. This issue is fixed in version 8.9.8.

CWE CWE-20 CWE-706
Vendor notepad-plus-plus
Product notepad-plus-plus
Published Sep 22, 2026
Stay Ahead of the Next One

Get instant alerts for notepad-plus-plus notepad-plus-plus

Be the first to know when new high vulnerabilities affecting notepad-plus-plus notepad-plus-plus are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Affected Versions

notepad-plus-plus / notepad-plus-plus
< 8.9.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗
github.com: https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-w5xq-frjg-w4cw github.com: https://github.com/notepad-plus-plus/notepad-plus-plus/commit/00fa5df0da1d4f6b334317aa979db13ac77ee24d github.com: https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8 notepad-plus-plus.org: https://notepad-plus-plus.org/news/v898-released