CVE-2026-27507
📋 TL;DR
Binardat 10G08-0800GSM network switches contain hard-coded administrative credentials that cannot be changed, allowing attackers with knowledge of these credentials to gain full administrative access. This affects all devices running firmware version V300SP10260209 and prior. Network administrators using these switches are at risk of complete device compromise.
💻 Affected Systems
- Binardat 10G08-0800GSM network switch
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete network compromise: attackers gain administrative control over switches, enabling traffic interception, network segmentation bypass, denial of service, and lateral movement to connected systems.
Likely Case
Unauthorized administrative access leading to network configuration changes, traffic monitoring, and potential data exfiltration from connected systems.
If Mitigated
Limited impact if switches are isolated in secure network segments with strict access controls and monitoring, though credentials remain vulnerable to insider threats.
🎯 Exploit Status
Exploitation requires only knowledge of the hard-coded credentials and network access to the management interface. No special tools or skills needed beyond basic network knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not provided in references
Restart Required: Yes
Instructions:
1. Check Binardat website for firmware updates. 2. Download latest firmware if available. 3. Upload firmware to switch via web interface or CLI. 4. Reboot switch to apply update.
🔧 Temporary Workarounds
Network segmentation and access control
allIsolate switch management interfaces to dedicated secure VLANs with strict firewall rules limiting access to authorized administrative IPs only.
Disable remote management
allDisable web/SSH/Telnet management on all interfaces except dedicated management ports, and disable unused management protocols.
🧯 If You Can't Patch
- Replace affected switches with different models that don't have hard-coded credentials
- Implement network monitoring and intrusion detection specifically for unauthorized access attempts to switch management interfaces
🔍 How to Verify
Check if Vulnerable:
Check firmware version via switch web interface or CLI. If version is V300SP10260209 or earlier, device is vulnerable.Check Version:
show version (CLI) or check System Information in web interfaceVerify Fix Applied:
Verify firmware version has been updated beyond V300SP10260209. Attempt to change administrative credentials - if successful, fix is working.📡 Detection & Monitoring
Log Indicators:
- Failed login attempts followed by successful login with default credentials
- Configuration changes from unexpected IP addresses
- Multiple administrative logins from unusual locations
Network Indicators:
- Unauthorized access to switch management ports (TCP 22, 23, 80, 443)
- Traffic patterns suggesting switch configuration changes
SIEM Query:
source="switch_logs" (event_type="login_success" AND user="admin") OR (event_type="config_change" AND NOT src_ip IN [admin_ips])