CVE-2016-9934: PHP

High severity, CVSS 7.5. EPSS: 6.8% chance of exploitation in the next 30 days.

ext/wddx/wddx.c in PHP before 5.6.28 and 7.x before 7.0.13 allows remote attackers to cause a denial of service (NULL pointer dereference) via crafted serialized data in a wddxPacket XML document, as demonstrated by a PDORow string.

Affected products

• PHP PHP: up to and including 5.6.27; 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; …

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