CVE-2026-51628

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 getGenerateWiFiWpsPin function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to generate and retrieve a new WPS PIN 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-2026-51628

EUVD

EUVD-2026-67896

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 TOTOLINK T6 router firmware version 4.1.5cu.748_B20211015. The flaw exists in the getGenerateWiFiWpsPin function, which allows unauthenticated attackers to generate and retrieve a new WPS PIN by sending a specially crafted POST request to the /cgi-bin/cstecgi.cgi endpoint.

Detection Guidance

To detect this vulnerability, check for unauthorized POST requests to /cgi-bin/cstecgi.cgi targeting the getGenerateWiFiWpsPin function. Monitor network traffic for suspicious activity from unauthenticated sources.

Impact Analysis

This vulnerability allows attackers to gain unauthorized access to your Wi-Fi network by obtaining the WPS PIN without authentication. Once they have the PIN, they can connect to your network, potentially intercepting sensitive data, installing malware, or using your internet connection for illegal activities.

Mitigation Strategies

Immediately update the TOTOLINK T6 firmware to the latest version. Disable WPS functionality if not needed. Restrict access to the /cgi-bin/cstecgi.cgi endpoint via network firewall rules.

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