CVE-2026-75984
Deferred Deferred - Pending Action

Command Injection in TRENDnet TEW-823DRU Router

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: VulDB

Description
A vulnerability was detected in TRENDnet TEW-823DRU 1.1.02b01. Impacted is an unknown function of the file /cgi-bin/admin.cgi. The manipulation of the argument Hostname results in command injection. The attack can be launched remotely. The exploit is now public and may be used.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-09-08
AI Q&A
2026-08-19
EPSS Evaluated
2026-09-07
NVD
CVE-2026-75984
EUVD
EUVD-2026-62216

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
trendnet tew-823dru 1.1.02b01

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is a command injection flaw in the TRENDnet TEW-823DRU router version 1.1.02b01. It allows attackers to execute arbitrary commands on the device by manipulating the Hostname parameter in the /cgi-bin/admin.cgi file via a crafted HTTP POST request.

Detection Guidance

To detect this vulnerability, monitor network traffic for HTTP POST requests to /cgi-bin/admin.cgi with the Hostname parameter containing suspicious payloads like command injection strings (; id; # or ; telnetd -p 9999 -l /bin/sh; #). Use packet capture tools like tcpdump or Wireshark to inspect traffic for these patterns.

Impact Analysis

An attacker could exploit this to run malicious commands on your router, potentially crashing it, rebooting it, or even gaining unauthorized access. This could lead to network disruption, data theft, or further compromise of connected devices.

Compliance Impact

This vulnerability allows remote command injection via the Hostname parameter in the TRENDnet TEW-823DRU router, enabling attackers to execute arbitrary commands on the device. Such unauthorized access could lead to data breaches, unauthorized data access, or system compromise, which may violate compliance requirements under GDPR (data protection) and HIPAA (protected health information).

Mitigation Strategies

Immediately update the TRENDnet TEW-823DRU firmware to the latest version if an update is available. Disable remote administration access to the router's admin interface if not required. Block external access to /cgi-bin/admin.cgi via firewall rules. Monitor device logs for unusual activity or crashes.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-75984. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart