CVE-2025-65403: 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.
CVE-2025-65403 · Severity: medium · CVSS 6.5 · Published 2025-12-01
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-65403 being exploited in the wild.
How severe is CVE-2025-65403?
Medium severity, with a CVSS score of 6.5, published 1 December 2025.
Which products and versions are affected?
Hfiref0x LightFTP. The advisory does not name versions.
Is there a fix for CVE-2025-65403?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-65403?
Check whether you run Hfiref0x LightFTP. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.