CVE-2007-6738

pyftpdlib before 0.1.1 does not choose a random value for the port associated with the PASV command, which makes it easier for remote attackers to obtain potentially sensitive information about the number of in-progress data connections by reading the response to this command.

Published: 2010-10-19 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2007-6738 is rated Moderate Risk (42.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.13%). Mandatory action: Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2007-6738

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.29% 1.13% +0.83%
2 2024-09-17 0.17% 0.29% +0.12%
3 2024-02-08 0.17%

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-6738

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
10.0 2.9 [email protected]

Weakness enumeration for CVE-2007-6738

GitHub Security Advisory for CVE-2007-6738

GHSA-gh7c-cg3x-pmcr · Severity: high · Ecosystem: pip — pyftpdlib Use of Insufficiently Random Values of port selection on PASV command

OS Trackers for CVE-2007-6738

vendor priority summary link
debian unimportant CVE-2007-6738 unimportant priority: Debian including 1 source packages (python-pyftpdlib), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2007-6738

Affected software / configurations for CVE-2007-6738

Vendor Product Version Raw CPE
g.rodola pyftpdlib <= 0.1 cpe:2.3:a:g.rodola:pyftpdlib:*:*:*:*:*:*:*:*

References for CVE-2007-6738

cvelogic Threat Intelligence