CVE-2020-37067

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2026-02-04. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

Filetto 1.0 FTP server contains a denial of service vulnerability in the FEAT command processing that allows attackers to crash the service. Attackers can send an oversized FEAT command with 11,008 bytes of repeated characters to trigger a buffer overflow and terminate the FTP service.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS
29.8%
KEV
Not listed

Published

February 3, 2026

Last Modified

April 15, 2026

Advisory Details (3)

Auto-updated May 18, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Filetto 1.0 - 'FEAT' Denial of Service | Advisories | VulnCheck

https://www.vulncheck.com/advisories/filetto-feat-denial-of-service
generic🟡 PoC Available

Filetto 1.0 - 'FEAT' Denial of Service (PoC) - Windows dos Exploit

https://www.exploit-db.com/exploits/48503
generic

Filetto download | SourceForge.net

https://sourceforge.net/projects/filetto

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 42× 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.

Showing the most recent 100 of 137 total refreshes for this CVE.

  1. 2026-07-23 01:53 UTCEG score recompute
  2. 2026-07-22 22:39 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
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  37. 2026-06-08 06:23 UTCGHSA enrichment
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  39. 2026-06-07 22:17 UTCGHSA enrichment
  40. 2026-06-07 15:23 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2020-37067?
CVE-2020-37067 is a critical vulnerability published on February 3, 2026. Filetto 1.0 FTP server contains a denial of service vulnerability in the FEAT command processing that allows attackers to crash the service. Attackers can send an oversized FEAT command with 11,008 bytes of repeated characters to trigger a buffer overflow and terminate the FTP service.
When was CVE-2020-37067 disclosed?
CVE-2020-37067 was first published in the National Vulnerability Database on February 3, 2026, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-37067 actively exploited?
CVE-2020-37067 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-37067?
CVE-2020-37067 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-37067?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-37067, 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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