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Vulnerability record · CVE-2003-1003 · published 5 January 2004

CVE-2003-1003: Cisco pix firewall improper input validation vulnerability

Cisco · Pix Firewall

Cisco PIX firewall 5.x.x, and 6.3.1 and earlier, allows remote attackers to cause a denial of service (crash and reload) via an SNMPv3 message when snmp-server is set.

7.8 CVSS 2.0 High EPSS 1.4% · top 29.1% CWE-20 · Improper input validation
7.8CVSS 2.0 base score
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
2References
16 Jun 2026Last modified by NVD

Description

Cisco PIX firewall 5.x.x, and 6.3.1 and earlier, allows remote attackers to cause a denial of service (crash and reload) via an SNMPv3 message when snmp-server is set.

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.cisco.com/warp/public/707/cisco-sa-20031215-pix.shtml PatchVendor Advisory
http://www.cisco.com/warp/public/707/cisco-sa-20031215-pix.shtml PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2003-1003), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.