Potential heap-buffer overflow vulnerability in NotepadNext
Priority MEDIUM 42CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00175 6th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
No affected products listed by the sources yet.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-52939
- 2026-10-03 Alias added: GHSA-hhj4-3c38-ppmf
References
More dail8859 vulnerabilities
- TI-2026-30535 Improper Control of Generation of Code ('Code Injection') in dail8859/NotepadNext CVSS 3.1HIGH 7.8
- TI-2025-32966 Potential heap-based buffer over-read vulnerability in NotepadNext CVSS 4.0MEDIUM 5.1
Sources
- CVE-2025-52939 · CVE Program
- CVE-2025-52939 · NVD
- FIRST EPSS
- GHSA-hhj4-3c38-ppmf · GitHub Advisory Database · CC BY 4.0
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