CVE-2024-41710
📋 TL;DR
This vulnerability allows authenticated attackers with administrative privileges on Mitel SIP phones to execute arbitrary system commands through argument injection during boot. It affects Mitel 6800 Series, 6900 Series, and 6900w Series SIP Phones including the 6970 Conference Unit. Attackers can gain full system control on vulnerable devices.
💻 Affected Systems
- Mitel 6800 Series SIP Phones
- Mitel 6900 Series SIP Phones
- Mitel 6900w Series SIP Phones
- Mitel 6970 Conference Unit
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of affected SIP phones allowing attackers to install persistent malware, intercept communications, pivot to internal networks, or disable critical voice services.
Likely Case
Attackers with administrative access could execute commands to steal credentials, modify phone configurations, or disrupt voice services on targeted devices.
If Mitigated
With proper network segmentation and administrative access controls, impact limited to isolated voice network segments with minimal data exposure.
🎯 Exploit Status
Exploit requires administrative credentials. Public GitHub repository contains technical details. CISA has added to Known Exploited Vulnerabilities catalog.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: R6.4.0.HF2 or later
Vendor Advisory: https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-24-0019
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 devices. 4. Reboot phones after update completes.
🔧 Temporary Workarounds
Restrict Administrative Access
allLimit administrative access to SIP phones to trusted management systems only
Configure firewall rules to restrict administrative interface access
Implement IP allowlisting for management traffic
Network Segmentation
allIsolate voice network from critical data networks
Implement VLAN segmentation for voice traffic
Configure access control lists between voice and data networks
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable phones from critical systems
- Enforce strong administrative password policies and multi-factor authentication where possible
🔍 How to Verify
Check if Vulnerable:
Check phone firmware version via web interface or phone display menu: Settings > System Information > Software VersionCheck Version:
Check via phone web interface at http://[phone-ip]/cgi-bin/configVerify Fix Applied:
Verify firmware version is R6.4.0.HF2 or later after update📡 Detection & Monitoring
Log Indicators:
- Unusual administrative login attempts
- Unexpected configuration changes
- Abnormal boot process logs
Network Indicators:
- Unusual outbound connections from phones
- Suspicious traffic to administrative interfaces
- Anomalous command execution patterns
SIEM Query:
source="phone-logs" AND (event="configuration_change" OR event="admin_login") AND user!="authorized_admin"