CVE-2003-0187

Name: CVE-2003-0187
Creator: NVD / NIST
Published: 2003-08-27T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.92%

Last modified Jun 16, 2026

CVE-2003-0187 is a vulnerability of currently unknown severity. The connection tracking core of Netfilter for Linux 2.4.20, with CONFIG_IP_NF_CONNTRACK enabled or the ip_conntrack module loaded, allows remote attackers to cause a denial of service (resource consumption) due to an inconsistency with Linux 2.4.20's support of linked lists, which causes Netfilter to fail to identify connections with an UNCONFIRMED status and use large timeouts.. EPSS estimates a 1.92% chance of exploitation in the next 30 days.

Description

The connection tracking core of Netfilter for Linux 2.4.20, with CONFIG_IP_NF_CONNTRACK enabled or the ip_conntrack module loaded, allows remote attackers to cause a denial of service (resource consumption) due to an inconsistency with Linux 2.4.20's support of linked lists, which causes Netfilter to fail to identify connections with an UNCONFIRMED status and use large timeouts.

Metrics

EPSS Probability

1.92%

77.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	2.4.20

References

Timeline

Published: Aug 27, 2003
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2003-0187?

How severe is CVE-2003-0187?

Severity scoring for CVE-2003-0187 is pending analysis. The EPSS model estimates a 1.92% probability of exploitation in the next 30 days.

How do I fix CVE-2003-0187?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2003-0187?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST