Is CVE-2003-0209 in the CISA KEV catalog?

No. CVE-2003-0209 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2003-0209?

CVE-2003-0209 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2003-0209?

CVE-2003-0209 has an EPSS score of 38.03% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2003-0209

HIGHEPSS 98th pctl

10.0

CVSS v2

NVD

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.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

38.03%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

http://marc.info/?l=bugtraq&m=105043563016235&w=2
http://marc.info/?l=bugtraq&m=105103586927007&w=2
http://marc.info/?l=bugtraq&m=105111217731583&w=2
http://marc.info/?l=bugtraq&m=105154530427824&w=2
http://marc.info/?l=bugtraq&m=105172790914107&w=2
http://www.cert.org/advisories/CA-2003-13.html
http://www.coresecurity.com/common/showdoc.php?idx=313&idxseccion=10
http://www.debian.org/security/2003/dsa-297
http://www.kb.cert.org/vuls/id/139129
http://www.mandriva.com/security/advisories?name=MDKSA-2003:052
http://www.securityfocus.com/bid/7178

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.