Is CVE-2014-3515 in the CISA KEV catalog?

No. CVE-2014-3515 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-3515?

CVE-2014-3515 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2014-3515?

CVE-2014-3515 has an EPSS score of 30.13% (98th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2014-3515

HIGHEPSS 98th pctl

7.5

CVSS v2

NVD

Description

The SPL component in PHP before 5.4.30 and 5.5.x before 5.5.14 incorrectly anticipates that certain data structures will have the array data type after unserialization, which allows remote attackers to execute arbitrary code via a crafted string that triggers use of a Hashtable destructor, related to "type confusion" issues in (1) ArrayObject and (2) SPLObjectStorage.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

30.13%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% 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.