Is CVE-2003-1001 being actively exploited?

CVE-2003-1001 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2003-1001?

CVE-2003-1001 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2003-1001

MEDIUM · CVSS 5.0EPSS 1.4%EU EUVD

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.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS score: 1.4% (72th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2003-0991)
Published: January 5, 2004
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2003-0991 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

cisco / catalyst 6500
cisco / catalyst 6500 ws-svc-nam-1
cisco / catalyst 6500 ws-svc-nam-1
cisco / catalyst 6500 ws-svc-nam-2
cisco / catalyst 6500 ws-svc-nam-2
cisco / catalyst 6500 ws-x6380-nam
cisco / catalyst 6500 ws-x6380-nam
cisco / catalyst 7600 ws-svc-nam-1
cisco / catalyst 7600 ws-svc-nam-1
cisco / catalyst 7600 ws-svc-nam-2
cisco / catalyst 7600 ws-svc-nam-2
cisco / catalyst 7600 ws-x6380-nam
cisco / catalyst 7600 ws-x6380-nam
cisco / catos
cisco / catos
cisco / catos
cisco / firewall services module
cisco / firewall services module

Certified products that may be affected

4 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Cisco Catalyst 6506, Catalyst 6506-E, Catalyst 6509 and Catalyst 6509-E Switch with Catalyst 6500 Series VPN Services Port Adapter (ws-ipsec-2 and ws-ipsec-3) - Cisco Systems, Inc. - FIPS 140 1155 - historical
Cisco Catalyst 6506, Catalyst 6506-E, Catalyst 6509 and Catalyst 6509-E Switch with Catalyst 6500 Series VPN Services Port Adapter (ws-ipsec-2 and ws-ipsec-3) - Cisco Systems, Inc. - FIPS 140 1153 - historical
Cisco Unified Wireless Network Solution composed of the following components: Cisco Aironet 1130, 1230, and 1240 AG Series Access Points; Cisco 4400 Series Wireless LAN Controllers; Cisco Catalyst 6500 Series Wireless Integrated Services Module (WiSM); Cisco Wireless Control System (WCS); Cisco Secure Access Control Server (ACS); Cisco 2710 Wireless Location - Cisco Systems, Inc. - Common Criteria CCEVS-VR-VID-10324-2009 - archived
Cisco Firewall Services Module (FWSM) Version 3.1.(3.17) for: Cisco Catalyst 6500 Switches and Cisco 7600 Series routers - Cisco Systems, Inc. - Common Criteria CCEVS-VR-0027-2007 - archived

References

http://www.cisco.com/warp/public/707/cisco-sa-20031215-fwsm.shtml(Patch, Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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