CVE-2004-1018: Multiple integer handling errors in PHP before 4.3.10 allow attackers to bypass safe mode restrictions, cau...

Security readout for executives and security teams

CVE-2004-1018 describes integer-handling flaws in PHP before 4.3.10. The reported outcomes include bypassing PHP safe mode restrictions, denial of service, and arbitrary code execution. The CVE record notes the candidate was disputed and may change, so treat the record as historically important but verify with vendor advisories before acting. Exposure is most likely in legacy systems still running PHP versions earlier than 4.3.10 or vendor-packaged PHP builds covered by the listed Red Hat, Mandriva, Fedora, Ubuntu, and HP advisories. Prioritize if any business system still runs PHP before 4.3.10. Modern environments are unlikely to be exposed, but legacy PHP can create severe operational risk because the reported impacts include code execution and denial of service. Mitigation focus: Inventory systems running legacy PHP 4.x packages.; Prioritize PHP instances earlier than 4.3.10 for review.; Apply updates using relevant vendor advisories or PHP release guidance..

Prepared

Jun 30, 2026, 02:08 UTC (UTC+00:00)

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