CVE-2026-42364: Geovision GV-LPC2011 Firmware RCE Flaw

CVE-2026-42364 Overview

CVE-2026-42364 is an operating system (OS) command injection vulnerability in the DdnsSetting.cgi functionality of GeoVision GV-LPC2011 and GV-LPC2211 firmware version 1.10. An authenticated attacker can submit a specially crafted Dynamic DNS (DDNS) configuration value to execute arbitrary commands on the underlying device. The flaw is tracked under CWE-78: Improper Neutralization of Special Elements used in an OS Command. GeoVision license plate capture devices are deployed in physical security and surveillance environments, making remote command execution on these endpoints a direct path to lateral movement inside operational networks.

Critical Impact

A low-privileged attacker with network access to the device web interface can achieve arbitrary command execution, leading to full compromise of the GV-LPC2011/LPC2211 license plate capture appliance.

Affected Products

• GeoVision GV-LPC2011 (firmware version 1.10)
• GeoVision GV-LPC2211 (firmware version 1.10)
• GeoVision GV-LPC2011 and GV-LPC2211 hardware running the affected firmware

Discovery Timeline

• 2026-05-04 - CVE-2026-42364 published to the National Vulnerability Database (NVD)
• 2026-05-05 - Last updated in NVD database

Technical Details for CVE-2026-42364

Vulnerability Analysis

The vulnerability resides in the DdnsSetting.cgi handler, which processes DDNS configuration parameters submitted through the device web interface. The handler passes one or more attacker-controlled configuration values into an OS command without sufficient neutralization of shell metacharacters. When the CGI binary executes the resulting command string through a shell interpreter, injected metacharacters such as ;, |, &&, or backticks are interpreted as command separators rather than literal data.

Exploitation requires network reachability to the management interface and valid low-privilege credentials, consistent with the attack vector indicated in the CVE record. Successful injection yields code execution in the security context of the CGI process, which on embedded GeoVision appliances typically runs with elevated privileges. The Exploit Prediction Scoring System (EPSS) probability for this CVE is 0.109%.

Root Cause

The root cause is missing input sanitization on DDNS configuration fields handled by DdnsSetting.cgi. Configuration values are concatenated into a shell command string and dispatched through a system call rather than executed via an execve-style API with argument arrays. Any field that an authenticated user can modify through the DDNS configuration UI becomes an injection point.

Attack Vector

The attack is performed over the network against the device HTTP/HTTPS management interface. An attacker authenticates with valid credentials, then sends a modified DDNS configuration request to DdnsSetting.cgi containing shell metacharacters appended to a legitimate-looking value. The injected payload executes when the device applies the configuration. Refer to the Talos Intelligence Vulnerability Reports for technical details on the affected parameter and proof-of-concept request structure.

Detection Methods for CVE-2026-42364

Indicators of Compromise

• Unexpected child processes spawned from the GeoVision CGI handler, particularly shell binaries (/bin/sh, /bin/busybox) following DDNS configuration changes.
• HTTP POST requests to DdnsSetting.cgi containing shell metacharacters such as ;, |, &, $(, or backticks in DDNS hostname, username, or password fields.
• Outbound network connections from the camera appliance to non-DDNS provider hosts shortly after configuration updates.
• New or modified files in writable firmware paths and unauthorized changes to the device DDNS configuration.

Detection Strategies

• Inspect web server and CGI access logs on the device, where available, for requests to DdnsSetting.cgi with non-printable or shell-control characters in parameter values.
• Deploy network intrusion detection signatures that match command-injection payloads in HTTP request bodies destined for GeoVision management interfaces.
• Baseline expected DDNS provider destinations and alert on outbound traffic from camera VLANs to unexpected IP addresses.

Monitoring Recommendations

• Forward device syslog and any available administrative audit logs to a centralized SIEM for correlation with network telemetry.
• Monitor authentication events on the GV-LPC2011/LPC2211 web interface for credential stuffing or brute force activity that could precede exploitation.
• Track firmware version inventory across the camera fleet to identify devices still running version 1.10.

How to Mitigate CVE-2026-42364

Immediate Actions Required

• Restrict network access to the device web interface so it is reachable only from a dedicated management VLAN or jump host.
• Rotate administrative credentials on all GV-LPC2011 and GV-LPC2211 devices and disable any unused accounts.
• Audit current DDNS configuration on each device and revert any unrecognized values that may indicate prior tampering.
• Review the GeoVision Cyber Security Overview for vendor-issued firmware updates and apply them as soon as they are released.

Patch Information

At the time of CVE publication, GeoVision had not listed a specific firmware build addressing CVE-2026-42364 in the public references. Administrators should consult the GeoVision Cyber Security Overview and contact GeoVision support to obtain a fixed firmware version for GV-LPC2011 and GV-LPC2211 devices currently running version 1.10.

Workarounds

• Place affected cameras behind a firewall that blocks inbound HTTP/HTTPS from untrusted networks and permits only authenticated administrator workstations.
• Disable the DDNS feature on devices that do not require it, removing the attack surface in DdnsSetting.cgi.
• Enforce strong, unique passwords for the device administrator account and require VPN access for remote management sessions.
• Segment camera networks from corporate, server, and OT environments to contain post-exploitation lateral movement.

# Example firewall rule restricting management access to a single admin subnet
# (adapt to your firewall syntax)
iptables -A FORWARD -p tcp -d <camera_ip> --dport 443 -s 10.10.50.0/24 -j ACCEPT
iptables -A FORWARD -p tcp -d <camera_ip> --dport 443 -j DROP
iptables -A FORWARD -p tcp -d <camera_ip> --dport 80  -j DROP