CVE-2025-47901
📋 TL;DR
This CVE describes an OS command injection vulnerability in Microchip Time Provider 4100 devices that allows attackers to execute arbitrary operating system commands. The vulnerability affects all Time Provider 4100 devices running versions before 2.5. Organizations using these devices for network time synchronization are at risk.
💻 Affected Systems
- Microchip Time Provider 4100
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the Time Provider 4100 device allowing full remote code execution, potential lateral movement to connected systems, and disruption of time synchronization services across the network.
Likely Case
Remote attackers gain shell access to the device, allowing them to modify configurations, install backdoors, disrupt time services, or use the device as a pivot point for further attacks.
If Mitigated
Limited impact if network segmentation and access controls prevent external access, though internal threats could still exploit the vulnerability.
🎯 Exploit Status
Based on the CVSS score and CWE-78 classification, exploitation is likely straightforward once the attack vector is identified. No public exploit code has been confirmed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.5
Restart Required: Yes
Instructions:
1. Download firmware version 2.5 from Microchip support portal. 2. Backup current configuration. 3. Upload and install the new firmware via the web interface. 4. Reboot the device. 5. Restore configuration if needed.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Time Provider 4100 devices from untrusted networks and restrict access to management interfaces.
Access Control Lists
allImplement strict firewall rules to limit which IP addresses can access the device's management interface.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Time Provider 4100 devices from untrusted networks
- Deploy web application firewall (WAF) rules to block command injection patterns targeting the management interface
🔍 How to Verify
Check if Vulnerable:
Check the firmware version via the web interface (System > About) or SSH to the device and check version information.Check Version:
ssh admin@[device-ip] 'show version' or check web interface at System > AboutVerify Fix Applied:
Confirm firmware version is 2.5 or later in the web interface or via SSH. Test that command injection attempts are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful access
- Unexpected process creation or system modifications
Network Indicators:
- Unusual outbound connections from Time Provider device
- Traffic patterns suggesting command injection attempts (special characters in HTTP requests)
SIEM Query:
source="timeprovider-4100" AND (event="command_execution" OR event="system_modification")