CVE-2024-22853
📋 TL;DR
This vulnerability allows remote attackers to gain root access to D-LINK Go-RT-AC750 routers via telnet using a hardcoded password for the Alphanetworks account. Anyone using the affected firmware version is vulnerable to complete system compromise. Attackers can take full control of the router without authentication.
💻 Affected Systems
- D-LINK Go-RT-AC750 GORTAC750_A1
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete router takeover allowing traffic interception, network pivoting, malware deployment, and persistent backdoor installation across the entire network.
Likely Case
Router compromise leading to DNS hijacking, credential theft from network traffic, and botnet recruitment.
If Mitigated
Limited impact if telnet is disabled and strong perimeter controls prevent external access.
🎯 Exploit Status
Exploitation requires only telnet access and knowledge of the hardcoded password. Public GitHub repository contains details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.dlink.com/en/security-bulletin/
Restart Required: No
Instructions:
Check D-LINK security bulletin for firmware updates. If available, download from official D-LINK support portal and follow firmware upgrade instructions.
🔧 Temporary Workarounds
Disable Telnet Service
allCompletely disable telnet access to prevent exploitation of the hardcoded credential.
Access router admin interface -> Advanced -> Administration -> Remote Management -> Disable Telnet
Change Default Credentials
allChange all default passwords including admin account, though this may not fix the hardcoded Alphanetworks account.
Access router admin interface -> Management -> Account -> Change password
🧯 If You Can't Patch
- Isolate router from internet by disabling WAN access or placing behind firewall
- Implement network segmentation to limit router access to management network only
🔍 How to Verify
Check if Vulnerable:
Attempt telnet connection to router on port 23 and try logging in with Alphanetworks account using known hardcoded password.Check Version:
Login to router web interface -> Status -> Firmware Version or check sticker on deviceVerify Fix Applied:
Verify telnet service is disabled or connection attempts fail. Check firmware version is updated beyond v101b03.📡 Detection & Monitoring
Log Indicators:
- Failed/successful telnet authentication attempts
- Alphanetworks account login events
- Root access via telnet
Network Indicators:
- Telnet traffic to router on port 23
- Unusual outbound connections from router
SIEM Query:
source="router_logs" AND (event="telnet_login" OR user="Alphanetworks")