CVE-2015-6832: PHP

High severity, CVSS 7.3. EPSS: 5% chance of exploitation in the next 30 days.

Use-after-free vulnerability in the SPL unserialize implementation in ext/spl/spl_array.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 allows remote attackers to execute arbitrary code via crafted serialized data that triggers misuse of an array field.

Affected products

• PHP PHP: up to and including 5.4.43; version 5.5.0 only; version 5.5.1 only; version 5.5.2 only; version 5.5.3 only; version 5.5.4 only; …

Published 2016-01-19. Last modified 2026-06-17.