A buffer overflow in the g_cfg.MaxUsers component of LightFTP v2.0 allows attackers to…
Priority MEDIUM 62CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
A buffer overflow in the g_cfg.MaxUsers component of LightFTP v2.0 allows attackers to cause a Denial of Service (DoS) via a crafted input.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00349 28th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-65403
- 2026-10-03 Alias added: GHSA-2h9h-pcw6-4f34
References
More hfiref0x Lightftp vulnerabilities
- TI-2023-09823 A race condition in LightFTP through 2.2 allows an attacker to achieve path traversal via… CVSS 3.1HIGH 7.5
- TI-2017-14535 LightFTP version 1.1 is vulnerable to a buffer overflow in the "writelogentry" function… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2025-65403 · CVE Program
- CVE-2025-65403 · NVD
- FIRST EPSS
- GHSA-2h9h-pcw6-4f34 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences