CVE-2014-3515: The SPL component in PHP before 5.4.30 and 5.5.x before 5.5.14 incorrectly anticipates that certain data st...

Security readout for executives and security teams

This is an old PHP SPL unserialization flaw. If a vulnerable PHP runtime processes a specially crafted serialized string, PHP may confuse object data types and reach arbitrary code execution. Business risk is concentrated in legacy PHP 5.4 and 5.5 deployments, especially internet-facing applications handling untrusted serialized data. Exposure is most likely in legacy systems still running the vulnerable PHP branches and accepting attacker-controlled serialized PHP data. The source bundle does not provide complete product CPEs, so packaged or embedded PHP exposure should be confirmed through vendor advisories. Prioritize remediation if any internet-facing or partner-facing system still uses vulnerable PHP versions. For modern supported PHP estates, urgency is mainly an inventory confirmation task because the affected branches are long obsolete. Mitigation focus: Upgrade PHP to 5.4.30, 5.5.14, or a supported later vendor release.; Apply relevant operating system or appliance vendor security updates.; Identify applications that unserialize untrusted input and prioritize them for remediation..

Prepared

Jun 14, 2026, 07:14 UTC (UTC+00:00)

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