CVE-2009-5013

Memory leak in the on_dtp_close function in ftpserver.py in pyftpdlib before 0.5.2 allows remote authenticated users to cause a denial of service (memory consumption) by sending a QUIT command during a data transfer.

Published: 2010-10-19 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-5013 is rated Low Risk (38.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.16%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2009-5013

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 0.51% 1.16% +0.64%
2 2025-03-30 0.56% 0.51% -0.05%
3 2025-03-29 — 0.56% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-5013

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P 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:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2009-5013

GitHub Security Advisory for CVE-2009-5013

GHSA-8gv6-x88p-3f6h · Severity: medium · Ecosystem: pip — Uncontrolled Resource Consumption in pyftpdlib

OS Trackers for CVE-2009-5013

vendor priority summary link
debian not yet assigned CVE-2009-5013 not yet assigned 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-2009-5013

Affected software / configurations for CVE-2009-5013

Vendor Product Version Raw CPE
g.rodola pyftpdlib <= 0.5.1 cpe:2.3:a:g.rodola:pyftpdlib:*:*:*:*:*:*:*:*
g.rodola pyftpdlib 0.1 cpe:2.3:a:g.rodola:pyftpdlib:0.1:*:*:*:*:*:*:*
g.rodola pyftpdlib 0.1.1 cpe:2.3:a:g.rodola:pyftpdlib:0.1.1:*:*:*:*:*:*:*
g.rodola pyftpdlib 0.2.0 cpe:2.3:a:g.rodola:pyftpdlib:0.2.0:*:*:*:*:*:*:*
g.rodola pyftpdlib 0.3.0 cpe:2.3:a:g.rodola:pyftpdlib:0.3.0:*:*:*:*:*:*:*
g.rodola pyftpdlib 0.4.0 cpe:2.3:a:g.rodola:pyftpdlib:0.4.0:*:*:*:*:*:*:*
g.rodola pyftpdlib 0.5.0 cpe:2.3:a:g.rodola:pyftpdlib:0.5.0:*:*:*:*:*:*:*

References for CVE-2009-5013

cvelogic Threat Intelligence