Is CVE-2015-4024 in the CISA KEV catalog?

No. CVE-2015-4024 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-4024?

CVE-2015-4024 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2015-4024?

CVE-2015-4024 has an EPSS score of 50.13% (99th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2015-4024

MEDIUMEPSS 99th pctl

5.0

CVSS v2

NVD

Description

Algorithmic complexity vulnerability in the multipart_buffer_headers function in main/rfc1867.c in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 allows remote attackers to cause a denial of service (CPU consumption) via crafted form data that triggers an improper order-of-growth outcome.

CWE-399

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

50.13%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.