CVE-2020-37208: Nsasoft SpotFTP buffer overflow in registration key field

CVE-2020-37208 · Severity: high · CVSS 7.5 · Published 2026-02-11

SpotFTP, a tool used for recovering FTP passwords, contains a flaw in its registration system. An attacker can cause the application to crash and become unusable by entering an excessively long registration key. This results in a denial of service, preventing legitimate users from accessing the software's features.

Technologies: Nsasoft Spotftp. Vendors: Nsasoft.

Quick answers

Is CVE-2020-37208 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2020-37208 being exploited in the wild.
How severe is CVE-2020-37208?
High severity, with a CVSS score of 7.5, published 11 February 2026.
Which products and versions are affected?
Nsasoft SpotFTP FTP Password Recovery 3.0.0.0.
Is there a fix for CVE-2020-37208?
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.
How is CVE-2020-37208 attacked?
It is attacked with local access, in a network appliance.
Am I affected by CVE-2020-37208?
Check whether you run Nsasoft Spotftp or Nsasoft SpotFTP FTP Password Recovery at an affected version. 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.

Technical details

A buffer overflow vulnerability exists in SpotFTP version 3.0.0.0 within the registration key input field. The flaw is classified as an out-of-bounds write (CWE-787) triggered when the application fails to properly validate the length of the input provided in the 'Key' field. An attacker can exploit this by pasting a payload of approximately 1,000 characters into the registration dialog, leading to memory corruption and an application crash (Denial of Service). While some sources suggest a network vector, the primary exploit method requires local interaction with the application's GUI. A public Proof of Concept (PoC) is available.

Affected products

  • Nsasoft (Nsauditor) SpotFTP FTP Password Recovery 3.0.0.0

Timeline

  • 2020-01-06: disclosed: Initial PoC published on Exploit-DB
  • 2026-02-11: advisory: NVD/VulnCheck advisory published

References

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