CVE-2026-56808 Overview
CVE-2026-56808 is an operating system (OS) command injection vulnerability [CWE-78] in the AVTECH Security Corporation DGM3103SCT IP camera. The flaw exists in the web management console and allows an authenticated user to execute arbitrary commands with root privileges on the underlying device. Exploitation requires valid login credentials to the affected product, but successful exploitation yields complete control over the camera and its network position.
Critical Impact
Authenticated attackers can execute arbitrary OS commands as root, resulting in full compromise of the affected IP camera and potential pivoting into internal networks.
Affected Products
- AVTECH Security Corporation DGM3103SCT IP Camera
- Refer to the JVN Security Advisory for firmware version details
- Additional product information is available on the AVTech Product Information page
Discovery Timeline
- 2026-06-30 - CVE-2026-56808 published to NVD
- 2026-06-30 - Last updated in NVD database
Technical Details for CVE-2026-56808
Vulnerability Analysis
The DGM3103SCT web management console fails to properly neutralize user-controllable input before passing it to an underlying OS command interpreter. This maps to [CWE-78], Improper Neutralization of Special Elements used in an OS Command. An authenticated attacker can inject shell metacharacters through a vulnerable web parameter, causing the embedded firmware to execute attacker-supplied commands in addition to the intended operation.
Because the camera's web services run with root privileges, injected commands inherit full administrative control of the device. This exposes camera video streams, stored recordings, configuration data, and network credentials. The Exploit Prediction Scoring System (EPSS) rates the probability of exploitation at 1.55% (72nd percentile) as of 2026-07-02.
Root Cause
The root cause is insufficient input sanitization in one or more web management console handlers. User-supplied parameters are concatenated into shell command strings that are executed by a system-level API such as system() or popen() without validating or escaping shell metacharacters such as ;, |, &, and backticks.
Attack Vector
Exploitation is network-based and requires high privileges — specifically, valid credentials for the web management console. An attacker who has authenticated (including via default, reused, or previously stolen credentials) submits a crafted HTTP request containing injected shell syntax. The web application forwards the payload to the OS shell, and the injected commands execute as root.
No verified proof-of-concept code has been published. Refer to the JVN Security Advisory for technical details.
Detection Methods for CVE-2026-56808
Indicators of Compromise
- Unexpected outbound connections from the DGM3103SCT camera IP address to unknown hosts
- Web server access logs containing shell metacharacters (;, |, &, `, $() in query strings or POST bodies
- New or unexpected processes spawned by the camera's web daemon
- Modifications to camera firmware configuration files or startup scripts outside of authorized administration windows
Detection Strategies
- Deploy network-based intrusion detection signatures for OS command injection patterns targeting the camera's web management console endpoints
- Baseline normal HTTP request payloads to the camera and alert on requests containing shell control characters
- Monitor authentication logs for successful logins to the DGM3103SCT web console followed by anomalous request patterns
Monitoring Recommendations
- Segment IP cameras onto isolated VLANs and monitor egress traffic for command-and-control indicators
- Capture and retain full HTTP request logs from the camera's management interface for retrospective analysis
- Alert on any interactive shell or scripting binaries being invoked by the camera's web services
How to Mitigate CVE-2026-56808
Immediate Actions Required
- Restrict access to the DGM3103SCT web management console to trusted management networks only, using firewall access control lists
- Rotate all administrative credentials for the affected cameras and remove any unused accounts
- Review recent access logs for signs of unauthorized authentication or command injection attempts
- Contact AVTECH Security Corporation for firmware updates addressing CVE-2026-56808
Patch Information
Refer to the JVN Security Advisory JVN28979424 and the vendor's AVTech Product Information for official patch availability and firmware update instructions. Apply the vendor-supplied firmware update as soon as it becomes available for the affected models.
Workarounds
- Place the camera behind a reverse proxy or VPN that enforces strong authentication and blocks direct exposure of the management console
- Disable remote access to the web management interface from untrusted networks
- Enforce strong, unique administrator passwords to reduce the likelihood of credential-based access required for exploitation
- Monitor and log all traffic to the camera's management interface for anomalous requests
# Example: restrict access to the camera management console to a trusted subnet
iptables -A INPUT -p tcp --dport 80 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
