CVE-2023-36741
📋 TL;DR
This vulnerability in Microsoft Edge (Chromium-based) allows attackers to gain elevated privileges on affected systems. It affects users running vulnerable versions of Microsoft Edge on Windows systems. Successful exploitation could lead to arbitrary code execution with higher privileges than intended.
💻 Affected Systems
- Microsoft Edge (Chromium-based)
📦 What is this software?
Edge Chromium by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with SYSTEM-level privileges, allowing installation of persistent malware, data theft, and lateral movement across the network.
Likely Case
Local privilege escalation allowing attackers to bypass security controls, install unwanted software, or access restricted system resources.
If Mitigated
Limited impact due to proper patch management and security controls, potentially resulting in failed exploitation attempts.
🎯 Exploit Status
Requires local access or user interaction. No public exploit code has been disclosed as of current knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Microsoft Edge version 116.0.1938.69 and later
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36741
Restart Required: Yes
Instructions:
1. Open Microsoft Edge. 2. Click Settings (three dots) → Help and feedback → About Microsoft Edge. 3. Browser will automatically check for updates and install if available. 4. Restart Edge when prompted.
🔧 Temporary Workarounds
Disable Microsoft Edge
windowsTemporarily disable Microsoft Edge as default browser while awaiting patch deployment
Use alternative browser
allSwitch to alternative browser until Edge is patched
🧯 If You Can't Patch
- Restrict local user privileges to minimize impact of privilege escalation
- Implement application whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check Microsoft Edge version: edge://settings/help or edge://versionCheck Version:
msedge --version (Windows) or check edge://version in browserVerify Fix Applied:
Verify version is 116.0.1938.69 or higher in edge://settings/help📡 Detection & Monitoring
Log Indicators:
- Unusual Edge process spawning with elevated privileges
- Edge crash reports with suspicious memory patterns
Network Indicators:
- Unusual outbound connections from Edge processes with elevated privileges
SIEM Query:
Process Creation where (Image contains 'msedge.exe' and IntegrityLevel contains 'High' or 'System')