CVE-2026-75985
Deferred Deferred - Pending Action

Command Injection in TRENDnet Router Firmware

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: VulDB

Description
A flaw has been found in TRENDnet Router 1.1.02b01. The affected element is an unknown function of the file /cgi-bin/ping.cgi. This manipulation of the argument wan_type causes command injection. The attack may be initiated remotely. The exploit has been published and may be used.

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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-2026-75985
EUVD
EUVD-2026-62217

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
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KEV
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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

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Executive Summary

This vulnerability is a command injection flaw in the TRENDnet TEW-823DRU AC3200 Router v1.1.02b01. It allows remote attackers to execute arbitrary commands on the device by manipulating parameters like 'wan_type' in specific CGI endpoints such as /cgi-bin/ping.cgi. The attack can be initiated remotely without authentication.

Detection Guidance

Check for unusual network traffic or connections to ports like 9999 (telnet). Inspect logs for requests to /cgi-bin/ping.cgi or /cgi-bin/wan.cgi with suspicious parameters like 'wan_type' or 'X-Forwarded-For' headers. Use tools like Wireshark or tcpdump to monitor for command injection attempts.

Impact Analysis

This vulnerability allows attackers to take control of your router remotely. They could install malware, steal data, monitor network traffic, or use your device in botnets. It may also lead to unauthorized access to connected devices on your network.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for data protection. Organizations may face fines and legal consequences for failing to secure network devices handling sensitive information.

Mitigation Strategies

Immediately update the router firmware to the latest version if available. Disable remote access to the router's web interface if not required. Block external access to /cgi-bin/ping.cgi and /cgi-bin/wan.cgi endpoints. Monitor network traffic for signs of exploitation and isolate affected devices.

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