CVE-2025-22941
📋 TL;DR
A command injection vulnerability in Adtran 411 ONT web interface allows attackers to execute arbitrary commands with root privileges. This affects systems running the vulnerable firmware version. Network administrators using these devices are at risk.
💻 Affected Systems
- Adtran 411 ONT
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with root access, allowing attackers to install persistent backdoors, exfiltrate data, pivot to other network segments, or disrupt network services.
Likely Case
Attackers gain root shell access to modify device configuration, intercept network traffic, or use the device as a foothold for further attacks.
If Mitigated
With proper network segmentation and access controls, impact is limited to the affected device only.
🎯 Exploit Status
Exploit requires authentication to web interface. Public technical details available in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Adtran support for firmware updates
2. Download latest firmware if available
3. Backup current configuration
4. Upload and apply new firmware
5. Verify functionality after update
🔧 Temporary Workarounds
Disable web interface
allDisable the vulnerable web management interface
Use CLI to disable web interface: configure terminal
no ip http server
end
write memory
Restrict web interface access
allLimit web interface access to trusted management networks only
configure terminal
ip http access-class TRUSTED-NETWORK
end
write memory
🧯 If You Can't Patch
- Isolate affected devices in separate VLAN with strict firewall rules
- Implement network monitoring for suspicious traffic to/from affected devices
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface or CLI: show versionCheck Version:
show versionVerify Fix Applied:
Verify firmware version is updated beyond L80.00.0011.M2📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts followed by successful login
- Web interface access from unusual IP addresses
Network Indicators:
- Unexpected outbound connections from ONT device
- Unusual traffic patterns to/from management interface
SIEM Query:
source="adtran-ont" AND (event_type="command_execution" OR auth_success="true" AFTER auth_failure>3)