CVE-2025-65403

Name: CVE-2025-65403
Creator: NVD / NIST
Published: 2025-12-01T16:15:57.03+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.27%

Last modified Jun 17, 2026

CVE-2025-65403 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.27%

18.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Hfiref0x	Lightftp	2.0

References

https://github.com/hfiref0x/LightFTPProduct
https://shimo.im/docs/9030JMJpv4IM4NkwExploit, Third Party Advisory

Timeline

Published: Dec 1, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is 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.

How severe is CVE-2025-65403?

CVE-2025-65403 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.27% probability of exploitation in the next 30 days.

How do I fix CVE-2025-65403?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-65403?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST