PT-2025-34098 · Undefined · Undefined

CVE-2010-20049 · Published 2025-08-20 · Updated 2025-08-20

NVD

CVSS v4.0

9.3

Critical

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2010-20049

Affected Products

Undefined

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2010-20049 · Security Note
• https://web.archive.org/web/20111013232627/http://leapware.com · Note
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/leapftp_list_reply.rb · Note
• https://exploit-db.com/exploits/16704 · Note
• https://web.archive.org/web/20111016194057/https://corelan.be/index.php/2010/10/12/death-of-an-ftp-client · Note
• https://vulncheck.com/advisories/leapftp-stack-buffer-overflow · Note