Is CVE-2012-4202 in the CISA KEV catalog?

No. CVE-2012-4202 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-4202?

CVE-2012-4202 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2012-4202?

CVE-2012-4202 has an EPSS score of 11.08% (95th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2012-4202

HIGHEPSS 95th pctl

9.3

CVSS v2

NVD

Description

Heap-based buffer overflow in the image::RasterImage::DrawFrameTo function in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code via a crafted GIF image.

CWE-787Out-of-bounds Write

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

11.08%probability of exploitation in 30 days

95thpercentile

Very high risk: more likely to be exploited than 95% of all known CVEs.

References

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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 2026-04-29.