CVE-2026-51650

Deferred Deferred - Pending Action

Incorrect Access Control in TOTOLINK T6 Firmware

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: MITRE

Description

Incorrect access control in the getRemoteCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain remote-management enablement and port information via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

CVSS Scores

EPSS Scores

Probability:
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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-2026-51650

EUVD

EUVD-2026-67884

Affected Vendors & Products

Vendor	Product	Version / Range
totolink	t6	4.1.5cu.748_b20211015

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is an incorrect access control issue in the getRemoteCfg function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. It allows unauthenticated attackers to retrieve remote-management settings and port details 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 related to remote management enablement. Check if unauthenticated requests are reaching this endpoint. Use tools like tcpdump or Wireshark to capture and analyze traffic.

Impact Analysis

An attacker could exploit this to gain unauthorized access to remote management capabilities and port configurations of the affected TOTOLINK T6 device. This may lead to further compromise of the device or network, including potential remote control by malicious actors.

Mitigation Strategies

Immediately disable remote management access if enabled. Update the TOTOLINK T6 firmware to the latest version if a patch is available. Restrict access to the /cgi-bin/cstecgi.cgi endpoint via firewall rules. Monitor logs for suspicious POST requests to this path.

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