CVE-2015-8876: PHP

Critical severity, CVSS 9.8. EPSS: 7.7% chance of exploitation in the next 30 days.

Zend/zend_exceptions.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 does not validate certain Exception objects, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or trigger unintended method execution via crafted serialized data.

Affected products

• PHP PHP: from 5.4.0, before 5.4.44 (fixed in 5.4.44); from 5.5.0, before 5.5.28 (fixed in 5.5.28); from 5.6.0, before 5.6.12 (fixed in 5.6.12)

Published 2016-05-22. Last modified 2026-06-17.