CVE-2016-20046
HIGH EPSS 4.6%
Published Mar 28, 20263mo ago · Modified Jun 17, 20261w ago
8.6 CVSS 4.0
Published Mar 28, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:L/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 Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
4.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-787 Out-of-bounds Write Memory Safety
References 3
- cernlib.web.cern.ch http://cernlib.web.cern.ch/cernlib/
- exploit-db.com https://www.exploit-db.com/exploits/40203
- vulncheck.com https://www.vulncheck.com/advisories/zftp-client-20061220-dfsg3-local-buffer-overflow
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.