CVE-2001-1068 — qpopper 4.01 with PAM based authentication on Red Hat systems generates different error messages when an invalid username is provided instead of a valid name, which allows remote attackers to determine valid usernames on the system

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MEDIUM

qpopper 4.01 with PAM based authentication on Red Hat systems generates different error messages when an invalid username is provided instead of a valid name, which allows remote attackers to determine valid usernames on the system

Published Feb 2, 2002

5.0

MEDIUM

CVSS 2.0

EPSS 1.11%

Description

qpopper 4.01 with PAM based authentication on Red Hat systems generates different error messages when an invalid username is provided instead of a valid name, which allows remote attackers to determine valid usernames on the system.

Affected products

Remediation

No remediation recorded yet.

Metrics

1.11% 0.01106

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.01106

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 (10 key points)

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

Date	Score	Percentile	Model
Oct 2, 2026	1.11% (0.01106)	64.62th	v5 (v2026.06.15)
Jun 15, 2026	1.11% (0.01106)	61.42th	v5 (v2026.06.15)
Mar 17, 2025	1.23% (0.01225)	77.75th	v4 (v2025.03.14)
Dec 12, 2024	0.30% (0.00304)	70.51th	v3 (v2023.03.01)
Feb 8, 2024	0.30% (0.00304)	68.86th	v3 (v2023.03.01)
Mar 7, 2023	0.30% (0.00304)	64.90th	v3 (v2023.03.01)
Mar 6, 2023	1.14% (0.01136)	59.45th	v2 (v2022.01.01)
Oct 18, 2022	1.14% (0.01136)	58.28th	v2 (v2022.01.01)
Apr 1, 2022	1.14% (0.01136)	56.27th	v2 (v2022.01.01)
Feb 4, 2022	1.14% (0.01136)	34.23th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (3)

http://archives.neohapsis.com/archives/bugtraq/2001-08/0363.html
mailing-listx_refsource_BUGTRAQExploitVendor Advisory
http://www.securityfocus.com/bid/3242
vdb-entryx_refsource_BIDPatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/7047
vdb-entryx_refsource_XF

Link	Providers	Tags
http://archives.neohapsis.com/archives/bugtraq/2001-08/0363.html		mailing-listx_refsource_BUGTRAQExploitVendor Advisory
http://www.securityfocus.com/bid/3242		vdb-entryx_refsource_BIDPatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/7047		vdb-entryx_refsource_XF

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Feb 2, 2002

Updated Aug 8, 2024

Reserved Jan 31, 2002

Link CVE-2001-1068

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2001-1068

Red Hat

Severity n/a

Public date n/a

Links CVE-2001-1068