CVE-2016-20046: Zftp Client

High severity, CVSS 8.4. EPSS: 0.2% chance of exploitation in the next 30 days.

zFTP Client 20061220+dfsg3-4.1 contains a buffer overflow vulnerability in the NAME parameter handling of FTP connections that allows local attackers to crash the application or execute arbitrary code. Attackers can supply an oversized NAME value exceeding the 80-byte buffer allocated in strcpy_chk to overwrite the instruction pointer and execute shellcode with user privileges.

Affected products

• Zftp Zftp Client: version 20061220+dfsg3-4.1 only

Published 2026-03-28. Last modified 2026-06-17.