CVE-2020-9274

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 6%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: Track

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
Severity75% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
6%
EPSS %ILE
93%
KEV
Not listed

Published

February 26, 2020

Last Modified

November 21, 2024

References (16)

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
pure-ftpd—1.0.49-4—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pure-ftpd—1.0.49-4—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pure-ftpd—1.0.49-4—
Debian:8(1)
PackageVulnerable rangeFixed inDependents
pure-ftpd1.0.36-3.21.0.36-3.2+deb8u1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 22× 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 147 total refreshes for this CVE.

  1. 2026-09-18 19:23 UTCEPSS rescore
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  1. 2026-08-16 02:11 UTCEPSS rescore
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  22. 2026-07-23 01:55 UTCEG score recompute
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Publicly available exploits

(1 reference)

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

  • Nucleinetwork/cves/2020/CVE-2020-9274.yaml
    First seen Jan 1, 2020

    Pure-FTPd ≤ 1.0.49 - DoS via Uninitialized Pointer

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-9274?
CVE-2020-9274 is a high vulnerability published on February 26, 2020. An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookupalias(const char alias) or printaliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a…
When was CVE-2020-9274 disclosed?
CVE-2020-9274 was first published in the National Vulnerability Database on February 26, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-9274 actively exploited?
CVE-2020-9274 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6% probability of exploitation in the next 30 days, which ranks it in the top 7.1% of all scored CVEs.
What is the CVSS score of CVE-2020-9274?
CVE-2020-9274 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2020-9274?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-9274, 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.

Dependency Blast Radius

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