Vulnerability · Published Jun 23, 2025 · Assigned by GovTech CSG
CVE-2025-52939Potential heap-buffer overflow vulnerability in NotepadNext
Critical 9.4
In plain English
A critical-severity out-of-bounds write in NotepadNext from dail8859. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 4.0)9.4Critical
Exploit odds (30 days)0.2%top 93.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| dail8859 | NotepadNext | 0 – through v0.11 |
Weakness: CWE-787 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/S:N/AU:Y/R:U/V:C/RE:M/U:Red