CVE-2003-1591

NWFTPD.nlm in the FTP server in Novell NetWare 6.0 before SP4 and 6.5 before SP1 allows user-assisted remote attackers to cause a denial of service (console hang) via a large number of FTP sessions, which are not properly handled during an NLM unload.

Published: 2010-04-05 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-1591 is rated Moderate Risk (43.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.48%). EPSS rose +1.23% over the last day, indicating growing attacker interest. 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-2003-1591

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 2026-06-15 0.25% 1.48% +1.23%
2 2026-05-05 0.40% 0.25% -0.15%
3 2025-03-17 — 0.40% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-1591

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2003-1591

Affected software / configurations for CVE-2003-1591

Vendor Product Version Raw CPE
novell netware 6.0 cpe:2.3:o:novell:netware:6.0:*:*:*:*:*:*:*
novell netware 6.0 cpe:2.3:o:novell:netware:6.0:sp1:*:*:*:*:*:*
novell netware 6.0 cpe:2.3:o:novell:netware:6.0:sp2:*:*:*:*:*:*
novell netware 6.0 cpe:2.3:o:novell:netware:6.0:sp3:*:*:*:*:*:*
novell netware 6.5 cpe:2.3:o:novell:netware:6.5:*:*:*:*:*:*:*

References for CVE-2003-1591

cvelogic Threat Intelligence