CVE-2026-76583: TRENDnet TV-IP751WIC RCE Vulnerability

CVE-2026-76583 Overview

CVE-2026-76583 is a command injection vulnerability affecting the TRENDnet TV-IP751WIC IP camera running firmware version 11.03.03. The flaw resides in the /cgi-bin/admin/set_time.cgi endpoint served by the alphapd web server component. Attackers can manipulate unsanitized input to inject arbitrary operating system commands. The attack can be initiated remotely across the network, and a public proof-of-concept exists in a GitHub repository. This weakness maps to CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component.

Critical Impact
Authenticated remote attackers can inject operating system commands through the time configuration handler of the camera, gaining execution on the embedded Linux device.

Affected Products

TRENDnet TV-IP751WIC IP Camera
Firmware version 11.03.03
alphapd embedded web server component

Discovery Timeline

2026-08-19 - CVE-2026-76583 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-76583

Vulnerability Analysis

The TRENDnet TV-IP751WIC exposes an administrative CGI endpoint at /cgi-bin/admin/set_time.cgi, handled by the alphapd HTTP daemon common to several small embedded devices. The handler accepts time configuration parameters from authenticated users and passes them into a shell context without sufficient sanitization. Attackers who supply shell metacharacters in the request can break out of the intended command and execute arbitrary code as the process owner, which is typically root on this class of consumer network device.

The Exploit Prediction Scoring System (EPSS) currently places this issue in the mid-percentile range, indicating measurable interest but not widespread mass exploitation. The publicly available proof-of-concept lowers the barrier to weaponization.

Root Cause

The root cause is improper neutralization of user-supplied input passed to a downstream command interpreter [CWE-74]. The set_time.cgi handler concatenates request parameters into an OS command string rather than using an argument-array execution path or a strict allowlist for date and time values.

Attack Vector

Exploitation requires network reachability to the camera's management interface and low-privileged authenticated access. An attacker crafts an HTTP request to /cgi-bin/admin/set_time.cgi containing shell metacharacters, such as semicolons or backticks, embedded in a time-related field. The alphapd process interprets the injected sequence, executing attacker-controlled commands on the device. Full technical detail and a working script are published in the GitHub PoC Repository.

No verified code example is reproduced here. See the GitHub CVE Code Repository for the researcher's original artifacts.

Detection Methods for CVE-2026-76583

Indicators of Compromise

HTTP requests to /cgi-bin/admin/set_time.cgi containing shell metacharacters such as ;, |, &, `, or $( in time-related parameters.
Unexpected outbound connections initiated by the camera to unfamiliar hosts shortly after administrative requests.
New or unexpected processes spawned by the alphapd daemon on the device.

Detection Strategies

Inspect web-facing logs and network capture data for POST or GET requests targeting set_time.cgi with non-numeric characters in date and time fields.
Alert on any administrative CGI access to the camera from source addresses outside a defined management network.
Correlate authentication events on the camera with immediately subsequent time-configuration requests to surface post-auth exploitation attempts.

Monitoring Recommendations

Place IP cameras and similar IoT devices on a segmented VLAN with egress filtering, and log all traffic entering and leaving that segment.
Forward network telemetry from IoT segments into a centralized analytics platform for anomaly identification and retrospective hunting.
Track firmware versions across the fleet so vulnerable TRENDnet TV-IP751WIC devices running 11.03.03 are readily identifiable.

How to Mitigate CVE-2026-76583

Immediate Actions Required

Restrict management access to the camera to a dedicated administrative network and block the web interface from untrusted networks and the internet.
Rotate administrative credentials on affected TV-IP751WIC devices and remove any unused administrator accounts.
Audit device logs and network flows for prior access to /cgi-bin/admin/set_time.cgi from unexpected sources.

Patch Information

No vendor advisory or firmware fix from TRENDnet is referenced in the available CVE data at the time of publication. Consult TRENDnet support channels for updated firmware for the TV-IP751WIC, and monitor the VulDB CVE Details page for advisory changes.

Workarounds

Disable remote administration and require VPN access for any management of the camera.
Enforce firewall rules that permit HTTP and HTTPS traffic to the camera only from designated administrator workstations.
Consider replacing end-of-support TRENDnet TV-IP751WIC units if no vendor patch becomes available for firmware 11.03.03.

bash

# Example iptables rule to restrict camera management access to a single admin host
iptables -A FORWARD -s 192.0.2.10 -d 10.20.30.40 -p tcp --dport 80 -j ACCEPT
iptables -A FORWARD -d 10.20.30.40 -p tcp --dport 80 -j DROP