CVE-2025-27211
📋 TL;DR
CVE-2025-27211 is an improper input validation vulnerability in EdgeMAX EdgeSwitch that allows command injection via adjacent network access. Attackers with network adjacency to vulnerable EdgeSwitch devices can execute arbitrary commands on the system. This affects EdgeSwitch version 1.10.4 and earlier.
💻 Affected Systems
- EdgeMAX EdgeSwitch
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the EdgeSwitch device allowing persistent backdoor installation, network traffic interception, lateral movement to connected systems, and disruption of network operations.
Likely Case
Unauthorized command execution leading to configuration changes, service disruption, credential harvesting, and potential foothold for further network attacks.
If Mitigated
Limited impact if network segmentation prevents adjacent access, but still poses risk to local network segments.
🎯 Exploit Status
Exploitation requires network adjacency but no authentication. Command injection vulnerabilities typically have low exploitation complexity.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.10.5 or later
Vendor Advisory: https://community.ui.com/releases/Security-Advisory-Bulletin-050-050/f82b1701-58a1-4b7d-9e20-82d50e3e1961
Restart Required: Yes
Instructions:
1. Log into EdgeSwitch web interface. 2. Navigate to System > Upgrade. 3. Download firmware version 1.10.5 or later. 4. Upload and install the firmware. 5. Reboot the switch after installation completes.
🔧 Temporary Workarounds
Network Segmentation
allIsolate EdgeSwitch management interfaces to dedicated VLANs with strict access controls
Access Control Lists
allImplement ACLs to restrict access to EdgeSwitch management interfaces from trusted sources only
🧯 If You Can't Patch
- Implement strict network segmentation to isolate EdgeSwitch devices from untrusted networks
- Deploy network monitoring and intrusion detection for suspicious traffic to switch management interfaces
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface: System > Status > Firmware Version. If version is 1.10.4 or earlier, device is vulnerable.Check Version:
ssh admin@switch-ip 'show version' or check web interface at System > StatusVerify Fix Applied:
After patching, verify firmware version shows 1.10.5 or later in System > Status > Firmware Version.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful access
- Configuration changes from unexpected sources
Network Indicators:
- Unusual traffic patterns to switch management interfaces
- Unexpected outbound connections from switch
- Protocol anomalies in management traffic
SIEM Query:
source="edgeswitch" AND (event_type="command_execution" OR event_type="configuration_change") AND NOT user IN ["admin", "operator"]