How severe is CVE-2003-1004?

CVE-2003-1004 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2003-1004 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2003-1004?

CVE-2003-1004 primarily affects Cisco Pix Firewall. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2003-1004?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2003-1004 published?

CVE-2003-1004 was published on 2004-01-05 and last updated on 2026-06-16.

CVE-2003-1004

CVE-2003-1004 is a medium-severity vulnerability in Cisco Pix Firewall with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Pix Firewall
Published: 2004-01-05
Last modified: 2026-06-16

Description

Cisco PIX firewall 6.2.x through 6.2.3, when configured as a VPN Client, allows remote attackers to cause a denial of service (dropped IPSec tunnel connection) via an IKE Phase I negotiation request to the outside interface of the firewall.

Frequently asked questions

What is CVE-2003-1004?: Cisco PIX firewall 6.2.x through 6.2.3, when configured as a VPN Client, allows remote attackers to cause a denial of service (dropped IPSec tunnel connection) via an IKE Phase I negotiation request to the outside interface of the firewall.
How severe is CVE-2003-1004?: CVE-2003-1004 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2003-1004 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-1004?: CVE-2003-1004 primarily affects Cisco Pix Firewall. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-1004?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2003-1004 published?: CVE-2003-1004 was published on 2004-01-05 and last updated on 2026-06-16.

References

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

Affected products (6)

cpe:2.3:a:cisco:pix_firewall:6.2.2_.111:*:*:*:*:*:*:*
cpe:2.3:o:cisco:pix_firewall_software:6.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:pix_firewall_software:6.2\(1\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:pix_firewall_software:6.2\(2\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:pix_firewall_software:6.2\(3\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:pix_firewall_software:6.2\(3.100\):*:*:*:*:*:*:*

More vulnerabilities in Cisco Pix Firewall

CVE-2003-1003 — High (CVSS 7.8): Cisco PIX firewall 5.x.x, and 6.3.1 and earlier, allows remote attackers to cause a denial of service (crash and…
CVE-2006-0515 — High (CVSS 7.5): Cisco PIX/ASA 7.1.x before 7.1(2) and 7.0.x before 7.0(5), PIX 6.3.x before 6.3.5(112), and FWSM 2.3.x before 2.3(4)…
CVE-2005-4499 — High (CVSS 7.5): The Downloadable RADIUS ACLs feature in Cisco PIX and VPN 3000 concentrators, when creating an ACL on the Cisco Secure…
CVE-2004-0079 — High (CVSS 7.5): The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause…
CVE-2002-0954 — High (CVSS 7.5): The encryption algorithms for enable and passwd commands on Cisco PIX Firewall can be executed quickly due to a limited…
CVE-1999-1582 — High (CVSS 7.5): By design, the "established" command on the Cisco PIX firewall allows connections from one host to arbitrary ports of a…

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