Is CVE-2012-4186 in the CISA KEV catalog?

No. CVE-2012-4186 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-4186?

CVE-2012-4186 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2012-4186?

CVE-2012-4186 has an EPSS score of 14.70% (96th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2012-4186

HIGHEPSS 96th pctl

9.3

CVSS v2

NVD

Description

Heap-based buffer overflow in the nsWaveReader::DecodeAudioData function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code via unspecified vectors.

CWE-119Buffer Overflow

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

14.70%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% 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.