CVE-2020-37208
Published: 11 February 2026
Summary
CVE-2020-37208 is a medium-severity Out-of-bounds Write (CWE-787) vulnerability in Nsasoft Spotftp. Its CVSS base score is 4.6 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 4.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Deeper analysis
CVE-2020-37208 is a buffer overflow vulnerability (CWE-787) affecting SpotFTP version 3.0.0.0 in the registration key input field. Published on 2026-02-11, it carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), indicating high-impact availability disruption with no confidentiality or integrity effects.
The vulnerability can be exploited by remote attackers requiring no privileges or user interaction. By generating a 1000-character payload and pasting it into the 'Key' field, attackers trigger an application crash, resulting in a denial of service.
Advisories from VulnCheck and a proof-of-concept on Exploit-DB detail the issue in SpotFTP's FTP password recovery key handling, confirming the crash via the described payload. No patches or vendor-specific mitigations are referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-31180
Vulnerability details
SpotFTP 3.0.0.0 contains a buffer overflow vulnerability in the registration key input field that allows attackers to crash the application. Attackers can generate a 1000-character payload and paste it into the 'Key' field to trigger an application crash and denial…
more
of service.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in input field directly enables application crash for DoS via exploitation (T1499.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly validates registration key inputs to block oversized payloads that trigger the buffer overflow and application crash.
Implements memory protections like stack canaries and DEP to prevent buffer overflows in the registration key field from disrupting system availability.
Establishes processes to identify, report, and remediate the specific buffer overflow flaw in SpotFTP version 3.0.0.0.