CVE-2026-51610
Deferred Deferred - Pending Action

Incorrect Access Control in TOTOLINK T6 Firmware Allows System Reboot

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: MITRE

Description
Incorrect access control in the RebootSystem function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to arbitrarily force an immediate reboot via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-08-29
AI Q&A
2026-08-29
EPSS Evaluated
N/A
NVD
CVE-2026-51610
EUVD
EUVD-2026-67915

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
totolink t6 4.1.5cu.748_b20211015

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is an incorrect access control issue in the RebootSystem function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. It allows unauthenticated attackers to force an immediate system reboot by sending a specially crafted POST request to the vulnerable endpoint /cgi-bin/cstecgi.cgi.

Detection Guidance

To detect this vulnerability, monitor network traffic for POST requests to /cgi-bin/cstecgi.cgi with parameters triggering the RebootSystem function. Check system logs for unexpected reboots or unauthorized POST requests to this endpoint.

Impact Analysis

This vulnerability could allow unauthorized individuals to remotely reboot your TOTOLINK T6 device without authentication. This may cause disruption to network services, potential data loss, and operational downtime for affected systems.

Mitigation Strategies

Immediately restrict access to /cgi-bin/cstecgi.cgi via firewall rules. Update the TOTOLINK T6 firmware to the latest version if available. Disable unnecessary services and monitor for suspicious POST requests.

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