Vulnerability · Published Feb 6, 2026 · Assigned by VulnCheck
CVE-2020-37155Core FTP Lite 1.3 - Denial of Service (PoC)
High 7.5
In plain English
A high-severity buffer overflow in Core FTP Lite from Core FTP. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 62.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Core FTP Lite 1.3 contains a buffer overflow vulnerability in the username input field that allows attackers to crash the application by supplying oversized input. Attackers can generate a 7000-byte payload of repeated 'A' characters to trigger an application crash without requiring additional interaction.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Core FTP | Core FTP Lite | 1.3c Build 1437 |
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- ExploitDB-48100 exploit
- Core FTP Official Homepage product
- VulnCheck Advisory: Core FTP Lite 1.3 - Denial of Service (PoC) third-party-advisory