CVE-2026-7334: Google Chrome Use-After-Free Vulnerability

CVE-2026-7334 Overview

CVE-2026-7334 is a Use After Free vulnerability in the Views component of Google Chrome on Mac prior to version 147.0.7727.138. This memory corruption flaw allows a remote attacker to potentially exploit heap corruption through a crafted HTML page, which could lead to arbitrary code execution within the context of the browser process.

Critical Impact
Remote attackers can potentially execute arbitrary code or cause heap corruption by tricking users into visiting a malicious webpage, compromising system integrity and confidentiality.

Affected Products

Google Chrome on Mac prior to version 147.0.7727.138
Chromium-based browsers on Mac using vulnerable Views component versions

Discovery Timeline

2026-04-28 - CVE-2026-7334 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2026-7334

Vulnerability Analysis

This Use After Free (CWE-416) vulnerability exists in the Views component of Google Chrome on Mac. The flaw occurs when the browser attempts to access memory that has already been freed, creating an opportunity for heap corruption. The Views component is responsible for rendering UI elements within Chrome, making it a critical attack surface.

The vulnerability requires user interaction—specifically, a victim must navigate to a malicious webpage containing specially crafted HTML content. Once triggered, the freed memory can be reallocated with attacker-controlled data, potentially allowing arbitrary code execution within the browser's security context.

Root Cause

The root cause is improper memory management within Chrome's Views component on Mac. When certain UI elements are destroyed and their associated memory is freed, the browser fails to properly invalidate references to that memory. Subsequent operations that reference the freed memory result in a Use After Free condition, enabling heap corruption.

Attack Vector

The attack is network-based and requires the victim to interact with malicious content. An attacker would:

Craft a malicious HTML page designed to trigger specific UI rendering operations in the Views component
Deliver the page to victims through phishing, malvertising, or compromised websites
When the victim visits the page, the crafted content triggers the Use After Free condition
The attacker can potentially leverage the heap corruption to execute arbitrary code or cause a denial of service

The vulnerability mechanism involves triggering specific lifecycle events in the Views component that cause memory to be freed prematurely while still being referenced elsewhere in the codebase. Technical details and the specific triggering conditions can be found in the Chromium Issue Tracker Entry.

Detection Methods for CVE-2026-7334

Indicators of Compromise

Unexpected Chrome crashes or instability, particularly on Mac systems
Browser processes consuming unusual amounts of memory
Anomalous network traffic to suspicious domains preceding browser crashes
Evidence of heap spray attempts in browser memory forensics

Detection Strategies

Monitor for Chrome versions prior to 147.0.7727.138 in enterprise asset inventories
Implement endpoint detection rules for abnormal Chrome process behavior on Mac endpoints
Deploy network-based detection for known malicious payloads targeting Chrome Views component
Utilize memory analysis tools to detect heap corruption patterns

Monitoring Recommendations

Enable Chrome's built-in crash reporting to identify potential exploitation attempts
Monitor system logs for repeated browser crashes or restarts
Implement application whitelisting and browser isolation for high-risk users
Configure SIEM alerts for suspicious browser-related events on Mac endpoints

How to Mitigate CVE-2026-7334

Immediate Actions Required

Update Google Chrome to version 147.0.7727.138 or later immediately
Verify all Mac endpoints are running patched Chrome versions
Consider enabling automatic updates for Chrome across the organization
Educate users about the risks of visiting untrusted websites until patches are deployed

Patch Information

Google has released Chrome version 147.0.7727.138 which addresses this vulnerability. The fix resolves the improper memory management in the Views component that led to the Use After Free condition. Organizations should prioritize deploying this update to all Mac systems running Chrome.

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

Workarounds

Restrict access to untrusted websites through web filtering until patching is complete
Consider using alternative browsers temporarily on critical systems if immediate patching is not feasible
Implement browser isolation solutions to contain potential exploitation attempts
Enable Site Isolation in Chrome for additional process-level protections

bash

# Verify Chrome version on Mac
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version

# Force Chrome update via terminal (requires admin privileges)
/Applications/Google\ Chrome.app/Contents/Frameworks/Google\ Chrome\ Framework.framework/Helpers/Google\ Chrome\ Helper.app/Contents/MacOS/Google\ Chrome\ Helper --type=update