Is CVE-2014-8142 in the CISA KEV catalog?

No. CVE-2014-8142 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-8142?

CVE-2014-8142 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2014-8142?

CVE-2014-8142 has an EPSS score of 53.17% (99th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2014-8142

HIGHEPSS 99th pctl

7.5

CVSS v2

NVD

Description

Use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.36, 5.5.x before 5.5.20, and 5.6.x before 5.6.4 allows remote attackers to execute arbitrary code via a crafted unserialize call that leverages improper handling of duplicate keys within the serialized properties of an object, a different vulnerability than CVE-2004-1019.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

53.17%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% 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 2026-05-06.