CVE-2003-0209

CVE-2003-0209 is a critical-severity vulnerability in Smoothwall with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 38% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Integer overflow in the TCP stream reassembly module (stream4) for Snort 2.0 and earlier allows remote attackers to execute arbitrary code via large sequence numbers in packets, which enable a heap-based buffer overflow.

Frequently asked questions

What is CVE-2003-0209?
Integer overflow in the TCP stream reassembly module (stream4) for Snort 2.0 and earlier allows remote attackers to execute arbitrary code via large sequence numbers in packets, which enable a heap-based buffer overflow.
How severe is CVE-2003-0209?
CVE-2003-0209 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2003-0209 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 38% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0209?
CVE-2003-0209 primarily affects Smoothwall. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0209?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2003-0209 published?
CVE-2003-0209 was published on 2003-05-05 and last updated on 2026-06-16.

References

Affected products (11)

More vulnerabilities in Smoothwall

All CVEs affecting Smoothwall →