CVE-2015-0231
7.5
CVSS v2.0 Base Score
87.33%
HIGH RiskEPSS (99th percentile)
NVD-CWE-Other
Use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re in PHP before 5.4.37, 5.5.x before 5.5.21, and 5.6.x before 5.6.5 allows remote attackers to execute arbitrary code via a crafted unserialize call that leverages improper handling of duplicate numerical keys within the serialized properties of an object. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8142.
Published: 1/27/2015
Modified: 5/6/2026
Vulnerability Summary
CVSS v2 Score
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS Score (Exploitation Probability)
87.33%HIGH Exploitation Risk
99th percentile
This vulnerability has a 87.33% probability of being exploited in the next 30 days, ranking higher than 99% of all scored CVEs.
CWE Classification
NVD-CWE-Other