CVE-2025-30184
📋 TL;DR
CVE-2025-30184 allows unauthenticated attackers to bypass authentication and access the CyberData 011209 Intercom web interface through an alternate path. This affects all organizations using vulnerable versions of this intercom system. The vulnerability enables unauthorized access to device controls and configuration.
💻 Affected Systems
- CyberData 011209 Intercom
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of intercom system allowing attackers to disable security functions, intercept communications, or use the device as an entry point to connected networks.
Likely Case
Unauthorized access to intercom controls allowing attackers to disable or manipulate the device, potentially disrupting building security and communications.
If Mitigated
Limited impact if device is isolated from critical networks and access controls are properly configured on surrounding infrastructure.
🎯 Exploit Status
Authentication bypass vulnerabilities typically require minimal technical skill to exploit once the alternate path is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific version
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-25-155-01
Restart Required: Yes
Instructions:
1. Check CISA advisory for patch details. 2. Download firmware update from CyberData. 3. Backup current configuration. 4. Apply firmware update via web interface. 5. Verify authentication is required for all access paths.
🔧 Temporary Workarounds
Network Segmentation
allIsolate intercom device from internet and restrict access to management interface
Access Control Lists
linuxImplement firewall rules to restrict access to intercom web interface
iptables -A INPUT -p tcp --dport 80 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Segment device on isolated VLAN with strict firewall rules
- Implement network monitoring for unauthorized access attempts to intercom interface
🔍 How to Verify
Check if Vulnerable:
Attempt to access web interface without authentication using known alternate paths (specific paths not disclosed)Check Version:
Check firmware version in web interface under System > About or similar menuVerify Fix Applied:
Verify authentication is required for all web interface access paths after patching📡 Detection & Monitoring
Log Indicators:
- Unauthenticated access to web interface paths
- Multiple failed login attempts followed by successful access without credentials
Network Indicators:
- Unusual traffic patterns to intercom web interface from unauthorized sources
- HTTP requests bypassing authentication endpoints
SIEM Query:
source="intercom_logs" AND (event="unauthorized_access" OR (event="login_failed" AND event="access_granted" within 5s))