Security readout for executives and security teams
CVE-2016-20046 is a high-severity local buffer overflow in zFTP Client version 20061220+dfsg3-4.1. A local attacker can cause a crash or potentially execute code with the privileges of the user running the client by abusing NAME parameter handling during FTP connection processing. Exposure is likely limited to hosts where zFTP Client 20061220+dfsg3-4.1 is installed and can be invoked or influenced by local users. This is not described as a remotely exploitable server-side issue in the bundle; the attack vector is local. Prioritize remediation on shared workstations, multi-user Linux systems, build hosts, research environments, and any system where zFTP Client is present and local users are not fully trusted. Treat as high priority if the affected version is confirmed installed. Mitigation focus: Inventory systems for zFTP Client, specifically version 20061220+dfsg3-4.1.; If the affected version is present, check vendor, distribution, or package-maintainer guidance for a fixed build or recommended replacement; the bundle does not provide patch evidence.; Remove or disable zFTP Client where it is not required..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.6 (4.0)
- Known Exploited
- No
- Published
Vector: 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
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.6HighVector: 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
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-40203CVE reference · exploit
- VulnCheck Advisory: zFTP Client 20061220+dfsg3-4.1 Local Buffer OverflowCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.