# CVE-2020-37209: Nsasoft SpotFTP buffer overflow in registration name field

Source: https://junglewise.ai/threats/cve-2020-37209-nsasoft-spotftp-buffer-overflow-in-registration-name-field  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-02-11. Updated: 2026-06-29  
License: CC BY 4.0 with a link back

CVE-2020-37209 · Severity: high · CVSS 7.5 · Published 2026-02-11

SpotFTP, a tool used for recovering FTP passwords, contains a flaw that allows the application to be crashed. By entering an excessively long string of text into the registration name field, a user can trigger a memory error that shuts down the software. While this primarily affects the availability of the tool on a specific computer, it could be used to disrupt password recovery operations.

Technologies: [Nsasoft Spotftp](https://junglewise.ai/threats/technologies/spotftp). Vendors: [Nsasoft](https://junglewise.ai/threats/vendors/nsasoft).

## Quick answers

**Is CVE-2020-37209 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-37209 being exploited in the wild.

**How severe is CVE-2020-37209?** 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-2020-37209?** 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-2020-37209 attacked?** It is attacked with local access, in a network appliance.

**Am I affected by CVE-2020-37209?** 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 classic buffer overflow (CWE-120) exists in SpotFTP FTP Password Recovery version 3.0.0.0 within the registration name input field. The vulnerability is triggered when a user pastes a specially crafted payload (approximately 1,000 characters) into the 'Name' field of the registration dialog. This lack of input validation leads to a memory corruption that causes the application to crash (Denial of Service). Exploitation requires local access and user interaction to paste the malicious string into the application interface. 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 exploit PoC published on Exploit-DB
- 2026-02-11: advisory: CVE published and NVD entry created

## References

- [http://www.nsauditor.com/](http://www.nsauditor.com/)
- [https://www.exploit-db.com/exploits/47868](https://www.exploit-db.com/exploits/47868)
- [https://www.vulncheck.com/advisories/spotftp-ftp-password-recovery-name-denial-of-service](https://www.vulncheck.com/advisories/spotftp-ftp-password-recovery-name-denial-of-service)

## Related threats

- [Nsasoft SpotFTP Password Recover denial of service in Name field](https://junglewise.ai/threats/cve-2019-25711-nsasoft-spotftp-password-recover-denial-of-service-in-name-field)
- [Nsasoft SpotFTP buffer overflow in registration key field](https://junglewise.ai/threats/cve-2020-37208-nsasoft-spotftp-buffer-overflow-in-registration-key-field)