CVE-2010-20049 Details
Description
LeapFTP < 3.1.x contains a stack-based buffer overflow vulnerability in its FTP client parser. When the client receives a directory listing containing a filename longer than 528 bytes, the application fails to properly bound-check the input and overwrites the Structured Exception Handler (SEH) chain. This allows an attacker operating a malicious FTP server to execute arbitrary code on the victim’s machine when the file is listed or downloaded.
A stack-based buffer overflow vulnerability has been identified in the LeapFTP FTP client, specifically in versions prior to 3.1.x. The issue arises in the FTP client parser, where the application fails to properly validate directory listing filenames longer than 528 bytes. This lack of input validation allows an attacker operating a malicious FTP server to overwrite the Structured Exception Handler (SEH) chain, potentially leading to arbitrary code execution on the victim's machine when the file is listed or downloaded.
Users are advised to update to LeapFTP version 3.1.0 or later, which addresses this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 20, 2025CISA-ADP
Assessed Aug 22, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| LeapFTP | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 16, 2026 | CVE Modified | [email protected] |
| Jun 16, 2026 | CVE Modified | CISA-ADP |
| Aug 22, 2025 | CVE Modified | CISA-ADP |
| Aug 20, 2025 | New CVE Received | [email protected] |