CVE-2026-1862
📋 TL;DR
A type confusion vulnerability in Chrome's V8 JavaScript engine allows attackers to corrupt heap memory via malicious web pages. This could lead to arbitrary code execution in the browser context. All users running vulnerable Chrome versions are affected.
💻 Affected Systems
- Google Chrome
- Chromium-based browsers
📦 What is this software?
Chrome by Google
Google Chrome is the world's most popular web browser, used by over 3 billion users globally across Windows, macOS, Linux, Android, and iOS platforms. As a Chromium-based browser developed by Google, Chrome dominates the browser market with approximately 65% market share, making it a critical compon...
Learn more about Chrome →⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with browser privileges, potentially leading to full system compromise if combined with other vulnerabilities.
Likely Case
Browser crash (denial of service) or limited code execution within sandboxed browser process.
If Mitigated
Browser crash with no data loss if sandbox holds, or successful exploitation blocked by security controls.
🎯 Exploit Status
Type confusion vulnerabilities in V8 are frequently exploited in the wild. No public exploit available yet, but likely to be weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 144.0.7559.132 and later
Vendor Advisory: https://chromereleases.googleblog.com/2026/02/stable-channel-update-for-desktop.html
Restart Required: Yes
Instructions:
1. Open Chrome. 2. Click three-dot menu → Help → About Google Chrome. 3. Chrome will automatically check for and install updates. 4. Click 'Relaunch' to restart Chrome with the fix.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents exploitation by disabling JavaScript execution, but breaks most websites.
chrome://settings/content/javascript → Block
Use Site Isolation
allEnables Chrome's Site Isolation feature to limit impact of renderer compromises.
chrome://flags/#enable-site-per-process → Enable
🧯 If You Can't Patch
- Use alternative browser temporarily
- Restrict browsing to trusted websites only
🔍 How to Verify
Check if Vulnerable:
Check Chrome version in chrome://settings/help or via 'chrome://version'Check Version:
google-chrome --version (Linux) or open chrome://versionVerify Fix Applied:
Confirm version is 144.0.7559.132 or higher📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with V8-related errors
- Unexpected renderer process terminations
Network Indicators:
- Requests to known malicious domains serving exploit code
- Unusual outbound connections from Chrome processes
SIEM Query:
process_name:"chrome.exe" AND (event_id:1000 OR event_id:1001) AND message:"V8" OR process_name:"chrome.exe" AND parent_process_name:"chrome.exe" AND exit_code:3221225477