CVE-2025-6177
📋 TL;DR
This vulnerability allows a local attacker with physical access to gain root code execution on enrolled ChromeOS devices by exploiting a debug shell accessible during developer mode entry. It affects ChromeOS devices running version 16063.45.2 and potentially others, even when developer mode is blocked by policy. Attackers can bypass security controls to achieve privilege escalation.
💻 Affected Systems
- Google ChromeOS
📦 What is this software?
Chrome Os by Google
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise with persistent root access, allowing data theft, malware installation, and bypassing all ChromeOS security features.
Likely Case
Local privilege escalation leading to unauthorized administrative access, potentially enabling data exfiltration or further system manipulation.
If Mitigated
Limited impact if physical access controls prevent unauthorized device handling and devices are kept in supervised environments.
🎯 Exploit Status
Exploitation requires physical access to device and knowledge of specific key combinations during boot sequence.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check ChromeOS updates for versions after 16063.45.2
Vendor Advisory: https://issuetracker.google.com/issues/382540412
Restart Required: Yes
Instructions:
1. Open ChromeOS Settings 2. Navigate to About ChromeOS 3. Check for updates 4. Apply any available updates 5. Restart device
🔧 Temporary Workarounds
Disable Developer Mode Access
allEnsure developer mode is completely disabled through enterprise policies
Physical Security Controls
allImplement strict physical access controls to prevent unauthorized handling of devices
🧯 If You Can't Patch
- Implement strict physical security controls to prevent unauthorized device access
- Monitor devices for signs of tampering or unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check ChromeOS version in Settings > About ChromeOS; if version is 16063.45.2 or earlier, device may be vulnerable.Check Version:
cat /etc/lsb-releaseVerify Fix Applied:
Verify ChromeOS version is updated beyond 16063.45.2 and attempt developer mode access to confirm debug shell is no longer accessible.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to VT3 console
- Unexpected developer mode activation events
- System logs showing privilege escalation
Network Indicators:
- Unusual network traffic from ChromeOS devices post-physical access
SIEM Query:
source="chromeos" AND (event="developer_mode_access" OR event="console_access")