CVE-2025-7742: LG Innotek LNV5110R Camera RCE Vulnerability

CVE-2025-7742 Overview

An authentication vulnerability exists in the LG Innotek camera model LNV5110R firmware that allows a malicious actor to upload an HTTP POST request to the device's non-volatile storage. This action may result in remote code execution that allows an attacker to run arbitrary commands on the target device at the administrator privilege level.

Critical Impact

This vulnerability enables unauthenticated remote attackers to achieve full administrative control over affected LG Innotek surveillance cameras through network-based exploitation.

Affected Products

• LG Innotek Camera Model LNV5110R (all firmware versions)

Discovery Timeline

• 2025-07-25 - CVE CVE-2025-7742 published to NVD
• 2025-07-25 - Last updated in NVD database

Technical Details for CVE-2025-7742

Vulnerability Analysis

This vulnerability is classified under CWE-288 (Authentication Bypass Using an Alternate Path or Channel), indicating that the camera firmware fails to properly enforce authentication controls for certain HTTP endpoints. The flaw allows unauthenticated users to bypass the normal authentication mechanism and directly interact with the device's non-volatile storage through specially crafted HTTP POST requests.

The vulnerability is particularly severe in IoT and industrial control system (ICS) environments where surveillance cameras are often deployed in critical infrastructure settings. Successful exploitation grants attackers the ability to execute arbitrary commands with administrator-level privileges, effectively providing complete control over the compromised device.

Root Cause

The root cause of this vulnerability stems from improper authentication enforcement within the LNV5110R camera's web interface. The firmware fails to validate user authentication before processing HTTP POST requests to endpoints responsible for writing to non-volatile storage. This authentication bypass allows attackers to upload malicious payloads without proper credential verification.

Attack Vector

The attack vector for CVE-2025-7742 is network-based, meaning attackers can exploit this vulnerability remotely without requiring physical access to the device. The exploitation process involves:

1. Identifying vulnerable LNV5110R cameras exposed on the network
2. Crafting malicious HTTP POST requests targeting the vulnerable endpoint
3. Uploading payloads to the device's non-volatile storage
4. Achieving remote code execution with administrator privileges

The vulnerability enables complete device compromise through network access, allowing attackers to execute arbitrary commands, modify device configurations, intercept video feeds, or pivot to other systems on the network.

Detection Methods for CVE-2025-7742

Indicators of Compromise

• Unexpected HTTP POST requests to the camera's web interface from unauthorized sources
• Unusual files or scripts appearing in the device's non-volatile storage
• Anomalous network traffic patterns originating from the camera to external IP addresses
• Unauthorized configuration changes or new user accounts created on the device

Detection Strategies

• Monitor network traffic for suspicious HTTP POST requests targeting LG Innotek camera endpoints
• Implement network intrusion detection rules to identify exploitation attempts against IoT devices
• Deploy endpoint detection capabilities on network segments containing vulnerable cameras
• Review camera access logs for authentication anomalies or unauthorized administrative actions

Monitoring Recommendations

• Segment IoT devices including surveillance cameras on isolated network VLANs
• Configure centralized logging for all camera web interface access attempts
• Establish baseline traffic patterns for surveillance cameras to detect anomalous behavior
• Implement real-time alerting for any administrative changes made to camera devices

How to Mitigate CVE-2025-7742

Immediate Actions Required

• Isolate affected LG Innotek LNV5110R cameras from external network access immediately
• Implement network-level access controls to restrict camera management interfaces to trusted hosts only
• Review camera configurations and logs for signs of compromise
• Contact LG Innotek support for firmware update availability and patching guidance

Patch Information

Organizations should consult the CISA ICS Advisory ICSA-25-205-04 for detailed mitigation guidance and patch availability information. As this vulnerability affects industrial control system components, users should follow their organization's change management procedures when applying any updates.

Workarounds

• Place affected cameras behind a firewall and restrict network access to authorized IP addresses only
• Disable remote management capabilities if not required for operational purposes
• Implement a VPN or jump host requirement for any remote administrative access to camera systems
• Consider deploying network-based web application firewalls to filter malicious HTTP requests

# Network segmentation example using iptables
# Restrict camera management interface access to trusted admin subnet only
iptables -A INPUT -p tcp --dport 80 -s 10.10.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -s 10.10.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP