CVE-2025-52939: DAIL8859 Notepadnext

Critical severity, CVSS 9.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Out-of-bounds Write vulnerability in dail8859 NotepadNext (src/lua/src modules). This vulnerability is associated with program files ldebug.C, lvm.C. This issue affects NotepadNext: through v0.11.

Affected products

• DAIL8859 Notepadnext

Published 2025-06-23. Last modified 2026-06-17.