CVE-2025-13227: Google Chrome V8 RCE Vulnerability

CVE-2025-13227 Overview

CVE-2025-13227 is a type confusion vulnerability in the V8 JavaScript engine used by Google Chrome. This vulnerability affects Google Chrome versions prior to 142.0.7444.59 and allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated as high severity by Chromium security, this flaw could enable attackers to achieve arbitrary code execution within the browser context.

Critical Impact

Remote attackers can exploit heap corruption through maliciously crafted web pages, potentially leading to arbitrary code execution in the browser sandbox.

Affected Products

• Google Chrome prior to version 142.0.7444.59
• Google Chrome on Linux
• Google Chrome on Microsoft Windows
• Google Chrome on Apple macOS

Discovery Timeline

• 2025-11-18 - CVE-2025-13227 published to NVD
• 2025-11-19 - Last updated in NVD database

Technical Details for CVE-2025-13227

Vulnerability Analysis

This vulnerability is classified as CWE-843 (Access of Resource Using Incompatible Type, also known as Type Confusion). Type confusion vulnerabilities occur when code does not verify the type of an object before performing operations on it, leading to unexpected behavior when the actual type differs from what the code expects.

In the context of V8, Google Chrome's JavaScript engine, type confusion can be particularly dangerous. V8 uses optimized internal representations for JavaScript objects, and when the engine incorrectly assumes an object's type, it may access memory at incorrect offsets or misinterpret data structures. This can corrupt the heap, leading to exploitable conditions.

The attack requires user interaction—specifically, the victim must visit a malicious webpage containing crafted HTML and JavaScript code designed to trigger the type confusion. Once triggered, the resulting heap corruption could allow an attacker to overwrite critical data structures or function pointers, potentially achieving code execution within Chrome's renderer process.

Root Cause

The root cause is a type confusion flaw in the V8 JavaScript engine. V8's Just-In-Time (JIT) compiler makes assumptions about object types to generate optimized machine code. When these assumptions are violated through specific sequences of JavaScript operations, the engine may treat an object as a different type than it actually is. This mismatch leads to incorrect memory operations that corrupt the heap.

Attack Vector

The attack vector is network-based, requiring the target user to navigate to an attacker-controlled or compromised webpage. The attacker embeds malicious JavaScript within an HTML page that exploits the type confusion in V8. When the victim's browser parses and executes this content, the vulnerability is triggered.

The exploitation chain typically involves:

1. Crafting JavaScript that causes V8 to make incorrect type assumptions
2. Exploiting the resulting heap corruption to achieve controlled memory access
3. Leveraging the memory corruption to escape the sandbox or execute arbitrary code

While user interaction is required (visiting the malicious page), no additional privileges or authentication are needed, making this vulnerability accessible to any attacker who can convince a user to click a link.

Detection Methods for CVE-2025-13227

Indicators of Compromise

• Unexpected browser crashes or instability when visiting unknown websites
• Chrome renderer process crashes with heap corruption signatures
• Anomalous JavaScript execution patterns in browser telemetry
• Memory access violations originating from the V8 engine

Detection Strategies

• Monitor for Chrome versions older than 142.0.7444.59 across your environment
• Deploy endpoint detection that monitors for suspicious renderer process behavior
• Implement web filtering to block access to known malicious domains
• Use browser isolation solutions for high-risk browsing activities

Monitoring Recommendations

• Enable Chrome crash reporting and analyze crash dumps for heap corruption indicators
• Monitor network traffic for connections to newly registered or suspicious domains
• Implement logging of browser version information across enterprise endpoints
• Review SentinelOne alerts for exploitation attempts targeting browser processes

How to Mitigate CVE-2025-13227

Immediate Actions Required

• Update Google Chrome to version 142.0.7444.59 or later immediately
• Enable automatic updates for all Chrome installations in your environment
• Advise users to avoid clicking links from untrusted sources until patched
• Consider deploying browser isolation for sensitive operations

Patch Information

Google has released a security update addressing this vulnerability in Chrome version 142.0.7444.59. The patch is available through Chrome's standard update mechanism. Organizations should consult the Google Chrome Update Announcement for detailed release information. Technical details about the vulnerability can be found in Chromium Issue #446122633.

Workarounds

• Disable JavaScript execution in Chrome via Settings, though this significantly impacts functionality
• Use browser isolation technology to contain potential exploits
• Implement network-level filtering to block known malicious content
• Deploy SentinelOne endpoint protection to detect and block exploitation attempts

# Verify Chrome version from command line
# Windows
"C:\Program Files\Google\Chrome\Application\chrome.exe" --version

# macOS
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version

# Linux
google-chrome --version

# Expected output should show version 142.0.7444.59 or higher