CVE-2009-4053

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2022-05-02. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 4%CVSS: 6.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Multiple directory traversal vulnerabilities in Home FTP Server 1.10.1.139 allow remote authenticated users to (1) create arbitrary directories via directory traversal sequences in an MKD command or (2) create files with any contents in arbitrary directories via directory traversal sequences in a file upload request. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

CVSS v3
6.5
EG Score
6.5(medium)
EPSS
87.9%
KEV
Not listed

Published

November 23, 2009

Last Modified

April 23, 2026

References (3)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 40× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:23 UTCEPSS rescore
  2. 2026-07-06 02:19 UTCEPSS rescore
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  1. 2026-06-19 19:22 UTCEPSS rescore
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  26. 2026-06-01 13:49 UTCEPSS rescore
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  28. 2026-05-31 22:28 UTCEPSS rescore
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  30. 2026-05-31 00:13 UTCEPSS rescore
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  32. 2026-05-30 14:33 UTCEG score recompute
  33. 2026-05-30 14:33 UTCGHSA enrichment
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  40. 2026-05-26 13:41 UTCEPSS rescore
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  42. 2026-05-26 07:16 UTCEPSS rescore
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  44. 2026-05-24 16:43 UTCEPSS rescore
  45. 2026-05-22 21:15 UTCEPSS rescore
  46. 2026-05-22 21:15 UTCEPSS rescore
  47. 2026-05-20 22:37 UTCEPSS rescore
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  49. 2026-05-20 11:21 UTCEPSS rescore
  50. 2026-05-20 11:20 UTCEPSS rescore
  51. 2026-05-18 21:29 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-10162✓ verified
    First seen Nov 17, 2009

    Home FTP Server - 'MKD' Directory Traversal

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2009-4053?
CVE-2009-4053 is a medium vulnerability published on November 23, 2009. Multiple directory traversal vulnerabilities in Home FTP Server 1.10.1.139 allow remote authenticated users to (1) create arbitrary directories via directory traversal sequences in an MKD command or (2) create files with any contents in arbitrary directories via directory traversal sequences in a…
When was CVE-2009-4053 disclosed?
CVE-2009-4053 was first published in the National Vulnerability Database on November 23, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-4053 actively exploited?
CVE-2009-4053 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2009-4053?
CVE-2009-4053 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2009-4053?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-4053, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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