CVE-2015-8873: Stack consumption vulnerability in Zend/zend_exceptions.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5....

Security readout for executives and security teams

This PHP flaw can let a remote attacker crash a vulnerable PHP process by triggering deep recursive method calls. The business impact is availability: affected web applications may fail or restart, but the sources do not indicate code execution or data theft. Exposure is most likely in legacy PHP 5.4, 5.5, or 5.6 deployments, especially internet-facing applications still running versions older than the fixed releases or older vendor packages. Treat as a legacy-platform availability risk. It is not marked KEV and no active exploitation is shown, but unsupported PHP 5 deployments should already be a remediation priority. Mitigation focus: Upgrade PHP to a fixed or vendor-supported patched version.; Apply relevant openSUSE, Red Hat, or distribution security updates where applicable.; Prioritize internet-facing and business-critical PHP services first..

Prepared

Jun 13, 2026, 14:22 UTC (UTC+00:00)

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