CVE-2025-5419: Google Chrome V8 Engine RCE Vulnerability

CVE-2025-5419 Overview

Out of bounds read and write in V8 in Google Chrome prior to 137.0.7151.68 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

Critical Impact
Allows potential heap corruptions leading to remote code execution.

Affected Products

Google Chrome
Microsoft Edge (Chromium)

Discovery Timeline

Not Available - Vulnerability discovered by Not Available
Not Available - Responsible disclosure to google
Not Available - CVE CVE-2025-5419 assigned
Not Available - google releases security patch
2025-06-03 - CVE CVE-2025-5419 published to NVD
2025-10-24 - Last updated in NVD database

Technical Details for CVE-2025-5419

Vulnerability Analysis

The vulnerability arises from an out-of-bounds read and write flaw in the V8 JavaScript engine used by Google Chrome. This type of heap memory corruption can be exploited by crafting a malicious HTML page that triggers the vulnerability, potentially allowing an attacker to execute arbitrary code.

Root Cause

The vulnerability is caused by insufficient bounds checking in the handling of specific JavaScript operations in the V8 engine.

Attack Vector

The attack can be conducted remotely by convincing a user to visit a maliciously crafted webpage or open a malicious HTML file over the network.

javascript

// Example exploitation code (sanitized)
function exploit() {
    let arr = new Array(1);
    arr[0] = 0x41414141;
    arr.length = 100;
    arr.fill(0x41414141, 0, 100);
}

Detection Methods for CVE-2025-5419

Indicators of Compromise

Unusual spikes in memory usage by the Chrome process
Unexpected crashes of the browser
Access to known exploit sites

Detection Strategies

Utilize runtime analysis tools like AddressSanitizer to monitor out-of-bounds memory access. Employ strict logging on browser execution to capture anomalous behavior, such as crashes or security exceptions associated with memory corruption.

Monitoring Recommendations

Set up alerts for high memory usage patterns and sudden crashes in logs. Utilize Intrusion Detection Systems (IDS) to monitor and alert on traffic to known malicious URLs exploiting this CVE.

How to Mitigate CVE-2025-5419

Immediate Actions Required

Update Google Chrome to version 137.0.7151.68 or later
Monitor for unusual activity related to browser processes
Educate users on safe browsing habits and the risks of visiting unknown websites

Patch Information

Refer to Chrome Release Notes for detailed patch information and other security updates.

Workarounds

While a direct workaround is not available, users can temporarily disable JavaScript until a patch can be applied, although this may impact the usability of some websites.

bash

# Configuration example
google-chrome --disable-javascript