CVE-2001-1500

ProFTPD 1.2.2rc2, and possibly other versions, does not properly verify reverse-resolved hostnames by performing forward resolution, which allows remote attackers to bypass ACLs or cause an incorrect client hostname to be logged.

Published: 2001-12-31 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2001-1500 is rated Moderate Risk (57.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.08%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2001-1500

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-17 0.45% 1.08% +0.64%
2 2024-12-27 0.63% 0.45% -0.19%
3 2024-12-17 — 0.63% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-1500

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2001-1500

Affected software / configurations for CVE-2001-1500

Vendor Product Version Raw CPE
proftpd_project proftpd 1.2 cpe:2.3:a:proftpd_project:proftpd:1.2:*:*:*:*:*:*:*
proftpd_project proftpd 1.2.0_rc3 cpe:2.3:a:proftpd_project:proftpd:1.2.0_rc3:*:*:*:*:*:*:*
proftpd_project proftpd 1.2.1 cpe:2.3:a:proftpd_project:proftpd:1.2.1:*:*:*:*:*:*:*
proftpd_project proftpd 1.2.2 cpe:2.3:a:proftpd_project:proftpd:1.2.2:*:*:*:*:*:*:*
proftpd_project proftpd 1.2.2_rc1 cpe:2.3:a:proftpd_project:proftpd:1.2.2_rc1:*:*:*:*:*:*:*
proftpd_project proftpd 1.2.2_rc2 cpe:2.3:a:proftpd_project:proftpd:1.2.2_rc2:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre1 cpe:2.3:a:proftpd_project:proftpd:1.2_pre1:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre2 cpe:2.3:a:proftpd_project:proftpd:1.2_pre2:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre3 cpe:2.3:a:proftpd_project:proftpd:1.2_pre3:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre4 cpe:2.3:a:proftpd_project:proftpd:1.2_pre4:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre5 cpe:2.3:a:proftpd_project:proftpd:1.2_pre5:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre6 cpe:2.3:a:proftpd_project:proftpd:1.2_pre6:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre7 cpe:2.3:a:proftpd_project:proftpd:1.2_pre7:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre8 cpe:2.3:a:proftpd_project:proftpd:1.2_pre8:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre9 cpe:2.3:a:proftpd_project:proftpd:1.2_pre9:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre10 cpe:2.3:a:proftpd_project:proftpd:1.2_pre10:*:*:*:*:*:*:*
proftpd_project proftpd 1.2_pre11 cpe:2.3:a:proftpd_project:proftpd:1.2_pre11:*:*:*:*:*:*:*

References for CVE-2001-1500

cvelogic Threat Intelligence