Is CVE-2009-3373 in the CISA KEV catalog?

No. CVE-2009-3373 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2009-3373?

CVE-2009-3373 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2009-3373?

CVE-2009-3373 has an EPSS score of 15.52% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2009-3373

HIGHEPSS 96th pctl

10.0

CVSS v2

NVD

Description

Heap-based buffer overflow in the GIF image parser in Mozilla Firefox before 3.0.15 and 3.5.x before 3.5.4, and SeaMonkey before 2.0, allows remote attackers to execute arbitrary code via unspecified vectors.

CWE-119Buffer Overflow

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

15.52%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

http://sunsolve.sun.com/search/document.do?assetkey=1-26-272909-1
http://www.mandriva.com/security/advisories?name=MDVSA-2009:294
http://www.mozilla.org/security/announce/2009/mfsa2009-56.html
http://www.vupen.com/english/advisories/2009/3334
https://bugzilla.mozilla.org/show_bug.cgi?id=511689
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10684
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6548

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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 2026-04-23.