CVE-2004-0042 — vsftpd 1.1.3 generates different error messages depending on whether or not a valid username exists, which allows remote attackers to identify valid usernames

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MEDIUM

vsftpd 1.1.3 generates different error messages depending on whether or not a valid username exists, which allows remote attackers to identify valid usernames

Published Jan 14, 2004

5.0

MEDIUM

CVSS 2.0

EPSS 1.23%

Description

vsftpd 1.1.3 generates different error messages depending on whether or not a valid username exists, which allows remote attackers to identify valid usernames.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.23% 0.01226

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01226

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (11 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.23% (0.01226)	67.74th	v5 (v2026.06.15)
Jun 15, 2026	1.23% (0.01226)	64.80th	v5 (v2026.06.15)
Mar 17, 2025	0.35% (0.00346)	55.00th	v4 (v2025.03.14)
Dec 12, 2024	1.33% (0.01327)	86.58th	v3 (v2023.03.01)
Jun 24, 2024	0.69% (0.00686)	80.16th	v3 (v2023.03.01)
Feb 8, 2024	0.48% (0.00479)	75.09th	v3 (v2023.03.01)
Mar 7, 2023	0.48% (0.00479)	72.05th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (1)

http://securitytracker.com/id?1008628
vdb-entryx_refsource_SECTRACK

Link	Providers	Tags
http://securitytracker.com/id?1008628		vdb-entryx_refsource_SECTRACK

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Jan 14, 2004

Updated Aug 8, 2024

Reserved Jan 8, 2004

Link CVE-2004-0042

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2004-0042

Red Hat

Severity n/a

Public date n/a

Links CVE-2004-0042