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CVE-2016-20046

26
FAUCET Score

CVE-2016-20046 is a high-severity buffer overflow vulnerability affecting zFTP Client version 20061220+dfsg3-4.1, specifically in its handling of the NAME parameter during FTP connections. This flaw allows a local attacker to supply an oversized NAME value, overwriting the instruction pointer and leading to application crashes or arbitrary code execution with user privileges. Rated with a CVSS v3.1 score of 8.4 (High), it has a local attack vector and low complexity, posing significant risks to confidentiality, integrity, and availability. Despite its severity, there is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
ZFTPZFTP Client
20061220+dfsg3-4.1CNA affected

CVSS Data

CVSS version used by this source: 4.0

8.6HIGH

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
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.15%
Probability of exploitation in next 30 days
EPSS Percentile
4.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0015 is in the 7th percentile among its peer group of 3,241 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cernlib.web.cern.ch / cernlib
exploit-db.com / exploits/40203
vulncheck.com / advisories/zftp-client-20061220-dfsg3-local-buffer-overflow