CVE-2026-77605: Notepad++ “Run by system” executes *.txt.cmd when user selected *.txt (target confusion → command execution)
Affected: notepad-plus-plus · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 11% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- notepad-plus-plus · notepad-plus-plus< 8.9.8
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- notepad-plus-plus
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-77605 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.
References
- NVD entrynvd.nist.gov
- CVE recordcve.org
- Weakness CWE-706cwe.mitre.org
- github.com/notepad-plus-plus/notepad-plus-plus/security/advisorigithub.com
- github.com/notepad-plus-plus/notepad-plus-plus/commit/00fa5df0dagithub.com
- github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9github.com
- notepad-plus-plus.org/news/v898-releasednotepad-plus-plus.org