CVE-2022-33639
📋 TL;DR
This vulnerability in Microsoft Edge (Chromium-based) allows an attacker to gain elevated privileges on a compromised system. It affects users running vulnerable versions of Microsoft Edge on Windows systems. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- Microsoft Edge (Chromium-based)
📦 What is this software?
Edge Chromium by Microsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with administrative privileges, allowing installation of malware, data theft, and persistence mechanisms.
Likely Case
Local privilege escalation enabling attackers to bypass security controls, access sensitive data, or execute arbitrary code with higher privileges.
If Mitigated
Limited impact if proper patch management and endpoint security controls are in place, though initial compromise could still occur.
🎯 Exploit Status
Requires local access or initial compromise to exploit. No public exploit code available as of knowledge cutoff.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 104.0.1293.47 or later
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-33639
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 and install updates. 4. Restart Edge when prompted.
🔧 Temporary Workarounds
Disable Microsoft Edge
windowsTemporarily disable Microsoft Edge if patching is not immediately possible
🧯 If You Can't Patch
- Restrict user privileges to standard user accounts only
- Implement application whitelisting to prevent unauthorized execution
🔍 How to Verify
Check if Vulnerable:
Open Microsoft Edge → Settings → Help and feedback → About Microsoft Edge. Check if version is below 104.0.1293.47.Check Version:
msedge --versionVerify Fix Applied:
Verify Microsoft Edge version is 104.0.1293.47 or higher in About Microsoft Edge page.📡 Detection & Monitoring
Log Indicators:
- Unusual Edge process spawning with elevated privileges
- Edge crash reports with suspicious patterns
SIEM Query:
Process creation where parent_process contains 'msedge.exe' and integrity_level changes