CVE-2026-51644
Deferred Deferred - Pending Action

Incorrect Access Control in TOTOLINK T6 Router

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: MITRE

Description
Incorrect access control in the getCrpcConfig function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain cloud remote-control status and URL information 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-2026-51644
EUVD
EUVD-2026-67922

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 getCrpcConfig function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. It allows unauthenticated attackers to retrieve cloud remote-control status and URL information 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 unusual parameters targeting the getCrpcConfig function. Check logs for unauthenticated access attempts to this endpoint.

Impact Analysis

An attacker could exploit this to gain unauthorized access to sensitive cloud configuration details of the device, potentially leading to further attacks or information disclosure. This could compromise the privacy and security of the device and its users.

Mitigation Strategies

Immediately update TOTOLINK T6 firmware to the latest version. Block external access to /cgi-bin/cstecgi.cgi via firewall rules. Disable unnecessary remote-control features if not in use.

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