CVE-2026-2846
📋 TL;DR
This CVE describes a remote command injection vulnerability in the UTT HiPER 520 router's web management interface. Attackers can execute arbitrary operating system commands by manipulating the policyNames parameter, potentially gaining full control of affected devices. This affects UTT HiPER 520 routers running firmware version 1.7.7-160105.
💻 Affected Systems
- UTT HiPER 520
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to install persistent backdoors, pivot to internal networks, intercept all network traffic, or use the device for botnet activities.
Likely Case
Unauthorized command execution leading to device configuration changes, credential theft, or denial of service attacks against the router.
If Mitigated
Limited impact if the web interface is not internet-facing and network segmentation prevents lateral movement from compromised devices.
🎯 Exploit Status
Exploit requires authentication to the web interface but is publicly documented with specific attack vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check vendor website for firmware updates. 2. Download latest firmware. 3. Backup current configuration. 4. Upload new firmware via web interface. 5. Reboot device. 6. Restore configuration if needed.
🔧 Temporary Workarounds
Disable Web Management Interface
allDisable the vulnerable web interface component to prevent exploitation
Use CLI: no web-management enable
Or via web interface: Disable web management in system settings
Restrict Access with ACLs
allImplement access control lists to limit who can reach the web interface
access-list 100 deny tcp any any eq 80
access-list 100 deny tcp any any eq 443
access-list 100 permit ip any any
Apply to appropriate interfaces
🧯 If You Can't Patch
- Isolate affected devices in separate VLANs with strict firewall rules
- Implement network monitoring for unusual outbound connections from routers
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface (System Status > Version) or CLI (show version)Check Version:
show versionVerify Fix Applied:
Verify firmware version is no longer 1.7.7-160105 and test the vulnerable endpoint with safe payloads📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/formPdbUpConfig
- Commands with policyNames parameter containing shell metacharacters
- Failed authentication attempts followed by successful login
Network Indicators:
- Unexpected outbound connections from router IP
- Traffic to known malicious IPs from router
- Unusual port scanning originating from router
SIEM Query:
source="router_logs" AND (url="/goform/formPdbUpConfig" OR policyNames=*[;&|`]* )