CVE-2024-41711
📋 TL;DR
An argument injection vulnerability in Mitel SIP phones allows unauthenticated attackers with physical access to execute arbitrary system commands. This affects Mitel 6800 Series, 6900 Series, and 6900w Series SIP Phones including the 6970 Conference Unit. Attackers can gain full control of affected devices through physical manipulation.
💻 Affected Systems
- Mitel 6800 Series SIP Phones
- Mitel 6900 Series SIP Phones
- Mitel 6900w Series SIP Phones
- Mitel 6970 Conference Unit
⚠️ 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 phone system allowing lateral movement to corporate network, data exfiltration, or deployment of persistent malware on network devices.
Likely Case
Local privilege escalation on individual phones, enabling eavesdropping on calls, call redirection, or using phones as network footholds.
If Mitigated
Limited to isolated phone compromise if network segmentation and physical security controls are properly implemented.
🎯 Exploit Status
Exploitation requires physical interaction with phone interface. No authentication needed once physical access achieved.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after R6.4.0.HF1 (R6.4.0.136)
Vendor Advisory: https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-24-0020
Restart Required: Yes
Instructions:
1. Download latest firmware from Mitel support portal. 2. Upload firmware to phone management system. 3. Schedule firmware update for affected phones. 4. Reboot phones after update completes.
🔧 Temporary Workarounds
Physical Security Controls
allRestrict physical access to phones through locked offices, visitor management, and surveillance.
Network Segmentation
allIsolate VoIP network from critical corporate systems to limit lateral movement.
🧯 If You Can't Patch
- Implement strict physical access controls to prevent unauthorized personnel from touching phones
- Deploy network monitoring on VoIP segments to detect anomalous phone behavior
🔍 How to Verify
Check if Vulnerable:
Check phone firmware version via web interface (Settings > Status > Version) or phone display menu.Check Version:
Via phone interface: Menu > Settings > Status > Version InformationVerify Fix Applied:
Confirm firmware version is newer than R6.4.0.HF1 (R6.4.0.136) after update.📡 Detection & Monitoring
Log Indicators:
- Unusual configuration changes in phone logs
- Multiple failed authentication attempts from phone interface
- Unexpected system command execution in phone logs
Network Indicators:
- Phones communicating with unexpected external IPs
- Unusual network traffic patterns from VoIP segment
- SIP protocol anomalies
SIEM Query:
source="voip-phones" AND (event_type="configuration_change" OR cmd_execution="*")