CVE-2025-0612: Google Chrome V8 RCE Vulnerability

CVE-2025-0612 Overview

CVE-2025-0612 is an out-of-bounds memory access vulnerability in the V8 JavaScript engine used by Google Chrome. This high-severity flaw allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. V8 is Chrome's open-source JavaScript and WebAssembly engine, making this vulnerability particularly concerning as it affects the core rendering and script execution capabilities of the browser.

Critical Impact

Remote attackers can exploit heap corruption through specially crafted HTML pages, potentially leading to denial of service or code execution in the context of the browser process.

Affected Products

• Google Chrome versions prior to 132.0.6834.110

Discovery Timeline

• 2025-01-22 - CVE-2025-0612 published to NVD
• 2025-04-18 - Last updated in NVD database

Technical Details for CVE-2025-0612

Vulnerability Analysis

This vulnerability is classified as CWE-125 (Out-of-bounds Read) and resides within the V8 JavaScript engine, which is responsible for parsing and executing JavaScript code in Google Chrome. The flaw occurs when V8 improperly handles memory boundaries during certain operations, allowing memory access outside the intended buffer limits.

An attacker can craft a malicious HTML page containing JavaScript code designed to trigger the out-of-bounds memory access. When a victim visits the page, the vulnerability can be exploited to read or corrupt heap memory, potentially leading to information disclosure, denial of service, or arbitrary code execution within the browser's sandbox.

The network-based attack vector means no authentication is required, and user interaction is limited to visiting a malicious webpage—a common and easily achievable attack scenario through phishing or malvertising campaigns.

Root Cause

The vulnerability stems from improper bounds checking within V8's memory management routines. When processing certain JavaScript constructs or WebAssembly operations, V8 fails to properly validate array indices or pointer calculations, resulting in memory access beyond allocated buffer boundaries. This out-of-bounds access can lead to heap corruption when the errant reads or writes interact with adjacent memory structures.

Attack Vector

The attack is network-based and requires user interaction in the form of visiting a malicious webpage. An attacker would typically:

1. Create a specially crafted HTML page containing malicious JavaScript code
2. Host the page on an attacker-controlled server or inject it into a compromised legitimate website
3. Lure victims to visit the malicious page via phishing emails, social engineering, or malicious advertisements
4. Upon page load, the V8 engine processes the crafted JavaScript, triggering the out-of-bounds memory access
5. The resulting heap corruption can cause a denial of service or potentially be leveraged for further exploitation

Since no public proof-of-concept code is available, specific exploitation details remain restricted to prevent abuse. Technical details may be available through the Chromium Issue Tracker.

Detection Methods for CVE-2025-0612

Indicators of Compromise

• Unexpected browser crashes or memory errors when visiting specific websites
• Chrome renderer process crashes with heap corruption signatures
• Anomalous JavaScript execution patterns in browser logs
• Unusual memory consumption spikes in Chrome processes

Detection Strategies

• Monitor browser telemetry for V8 engine crashes with out-of-bounds access signatures
• Implement endpoint detection rules for Chrome process abnormal termination events
• Deploy network monitoring to identify potentially malicious JavaScript payloads
• Enable enhanced browser logging to capture JavaScript execution anomalies

Monitoring Recommendations

• Configure SentinelOne agents to detect and alert on browser exploitation attempts
• Enable Chrome's built-in crash reporting and security telemetry features
• Monitor for unusual network traffic patterns associated with browser-based attacks
• Implement web filtering to block known malicious domains and suspicious JavaScript content

How to Mitigate CVE-2025-0612

Immediate Actions Required

• Update Google Chrome to version 132.0.6834.110 or later immediately
• Enable automatic updates for Chrome to ensure timely security patches
• Restrict browsing to trusted websites until patches are applied
• Consider using browser isolation technologies for high-risk users

Patch Information

Google has released Chrome version 132.0.6834.110 to address this vulnerability. The update includes fixes for the V8 out-of-bounds memory access issue along with other security improvements. Organizations should prioritize deployment of this update across all managed Chrome installations.

For detailed patch information, refer to the Google Chrome Desktop Update.

Workarounds

• Enable Site Isolation in Chrome to limit cross-site exploitation potential
• Disable JavaScript execution on untrusted websites using Chrome's content settings
• Deploy browser extensions that block potentially malicious scripts
• Use enterprise browser policies to restrict access to high-risk web content

# Force Chrome update via command line (Windows)
"C:\Program Files\Google\Chrome\Application\chrome.exe" --update

# Verify Chrome version
chrome://settings/help

# Enterprise deployment: Use Group Policy or Chrome Browser Cloud Management
# to enforce minimum browser version requirements