High 8.4Published Mar 28, 2026

CVE-2016-20046zFTP Client 20061220+dfsg3-4.1 Local Buffer Overflow

Updated under an hour ago (Oct 26, 2026, 1:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 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.

CVSS: 8.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Apr 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

zFTP zFTP Client zftp:client (from the name)	20061220+dfsg3-4.1	CNA record

References

https://www.exploit-db.com/exploits/40203exploit
http://cernlib.web.cern.ch/cernlib/product
https://www.vulncheck.com/advisories/zftp-client-20061220-dfsg3-local-buffer-overflowthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.