Fortinet investigates CVE-2026-109618, a PHP out-of-memory flaw enabling RCE, across its product portfolio
Fortinet published PSIRT advisory FG-IR-26-186 for CVE-2026-109618, a flaw in PHP that can lead to remote code execution (RCE). PHP uses longjmp() to abort request handling on out-of-memory (OOM) errors. Some contexts do not account for this and leave request memory uninitialized before an allocation. Fortinet says it is still investigati…