CVE-2016-7124: ext/standard/var_unserializer.c in PHP before 5.6.25 and 7.x before 7.0.10 mishandles certain invalid objec...

Security readout for executives and security teams

This issue affects older PHP runtimes that mishandle malformed serialized objects. An attacker who can submit crafted serialized data may crash the process, and the CVE notes possible unspecified additional impact. The source bundle does not show active exploitation or a CVSS score. Exposure is most likely where PHP before 5.6.25 or PHP 7.0.x before 7.0.10 processes attacker-controlled serialized data, especially through public web routes, APIs, sessions, queues, or stored inputs later passed to unserialization. Prioritize remediation for internet-facing or partner-facing PHP systems that handle serialized input. The main documented risk is service disruption, but the unspecified additional impact means outdated exposed systems should not be left unpatched. Mitigation focus: Upgrade PHP to 5.6.25, 7.0.10, or later supported vendor packages.; Apply distribution security updates referenced by Gentoo, Red Hat, or other vendors.; Review application paths that process externally supplied serialized PHP data..

Prepared

Jun 13, 2026, 13:39 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.