CVE-2007-1383: PHP

Critical severity, CVSS 9.8. EPSS: 15.4% chance of exploitation in the next 30 days.

Integer overflow in the 16 bit variable reference counter in PHP 4 allows context-dependent attackers to execute arbitrary code by overflowing this counter, which causes the same variable to be destroyed twice, a related issue to CVE-2007-1286.

Affected products

• PHP PHP: version 4.0 only

Published 2007-03-10. Last modified 2026-06-16.