CVE-2003-1001

Buffer overflow in the Cisco Firewall Services Module (FWSM) in Cisco Catalyst 6500 and 7600 series devices allows remote attackers to cause a denial of service (crash and reload) via HTTP auth requests for (1) TACACS+ or (2) RADIUS authentication.

Published: 2004-01-05 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-1001 is rated Moderate Risk (44.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.38%). 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-2003-1001

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 0.80% 1.38% +0.58%
2 2025-03-30 0.74% 0.80% +0.05%
3 2025-03-29 — 0.74% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-1001

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/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:L)
Exploitation conditions are straightforward and predictable.
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.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2003-1001

Affected software / configurations for CVE-2003-1001

Vendor Product Version Raw CPE
cisco catalyst_6500 — cpe:2.3:h:cisco:catalyst_6500:*:*:*:*:*:*:*:*
cisco catalyst_6500_ws-svc-nam-1 2.2\(1a\) cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:2.2\(1a\):*:*:*:*:*:*:*
cisco catalyst_6500_ws-svc-nam-1 3.1\(1a\) cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-1:3.1\(1a\):*:*:*:*:*:*:*
cisco catalyst_6500_ws-svc-nam-2 2.2\(1a\) cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-2:2.2\(1a\):*:*:*:*:*:*:*
cisco catalyst_6500_ws-svc-nam-2 3.1\(1a\) cpe:2.3:h:cisco:catalyst_6500_ws-svc-nam-2:3.1\(1a\):*:*:*:*:*:*:*
cisco catalyst_6500_ws-x6380-nam 2.1\(2\) cpe:2.3:h:cisco:catalyst_6500_ws-x6380-nam:2.1\(2\):*:*:*:*:*:*:*
cisco catalyst_6500_ws-x6380-nam 3.1\(1a\) cpe:2.3:h:cisco:catalyst_6500_ws-x6380-nam:3.1\(1a\):*:*:*:*:*:*:*
cisco catalyst_7600_ws-svc-nam-1 2.2\(1a\) cpe:2.3:h:cisco:catalyst_7600_ws-svc-nam-1:2.2\(1a\):*:*:*:*:*:*:*
cisco catalyst_7600_ws-svc-nam-1 3.1\(1a\) cpe:2.3:h:cisco:catalyst_7600_ws-svc-nam-1:3.1\(1a\):*:*:*:*:*:*:*
cisco catalyst_7600_ws-svc-nam-2 2.2\(1a\) cpe:2.3:h:cisco:catalyst_7600_ws-svc-nam-2:2.2\(1a\):*:*:*:*:*:*:*
cisco catalyst_7600_ws-svc-nam-2 3.1\(1a\) cpe:2.3:h:cisco:catalyst_7600_ws-svc-nam-2:3.1\(1a\):*:*:*:*:*:*:*
cisco catalyst_7600_ws-x6380-nam 2.1\(2\) cpe:2.3:h:cisco:catalyst_7600_ws-x6380-nam:2.1\(2\):*:*:*:*:*:*:*
cisco catalyst_7600_ws-x6380-nam 3.1\(1a\) cpe:2.3:h:cisco:catalyst_7600_ws-x6380-nam:3.1\(1a\):*:*:*:*:*:*:*
cisco firewall_services_module — cpe:2.3:h:cisco:firewall_services_module:*:*:*:*:*:*:*:*
cisco firewall_services_module 1.1.2 cpe:2.3:h:cisco:firewall_services_module:1.1.2:*:*:*:*:*:*:*
cisco catos 5.4\(1\) cpe:2.3:o:cisco:catos:5.4\(1\):*:*:*:*:*:*:*
cisco catos 7.5\(1\) cpe:2.3:o:cisco:catos:7.5\(1\):*:*:*:*:*:*:*
cisco catos 7.6\(1\) cpe:2.3:o:cisco:catos:7.6\(1\):*:*:*:*:*:*:*

References for CVE-2003-1001

cvelogic Threat Intelligence