CVE-2016-9936: PHP

Critical severity, CVSS 9.8. EPSS: 4.3% chance of exploitation in the next 30 days.

The unserialize implementation in ext/standard/var.c in PHP 7.x before 7.0.14 allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted serialized data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6834.

Affected products

• PHP PHP: version 7.0.0 only; version 7.0.1 only; version 7.0.2 only; version 7.0.3 only; version 7.0.4 only; version 7.0.5 only; …

Published 2017-01-04. Last modified 2026-06-17.