Incorrect access control in the getStaticDhcpRules function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain WPS… (CVE-2026-51631)
Description
An access control vulnerability exists in the getStaticDhcpRules function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. This flaw allows unauthenticated attackers to retrieve the WPS runtime status by sending a crafted POST request to the /cgi-bin/cstecgi.cgi endpoint. The vulnerability has a CVSS score of 4.3, indicating medium severity, and does not require user interaction or privileges to exploit.
CVSS v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-51631 is an access control vulnerability in the getStaticDhcpRules function of TOTOLINK T6 firmware 4.1.5cu.748_B20211015. It permits unauthenticated attackers to obtain WPS runtime status information by sending a specially crafted POST request to the /cgi-bin/cstecgi.cgi CGI endpoint. The weakness is classified under CWE-284 (Improper Access Control). No known exploits are reported in the wild, and no patch or remediation information is currently available.
Potential Impact
An attacker without authentication can access WPS runtime status information, which may aid in further reconnaissance or targeted attacks against the device. The confidentiality impact is limited to information disclosure; integrity and availability are not affected according to the available data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the device management interface to trusted networks and consider disabling WPS if possible to reduce exposure.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-qwm7-7hpw-4gwq
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-51631"]
Threat ID: 6a92f7f5acd9273b49e83aaf
Added to database: 08/29/2026, 15:17:09 UTC
Last enriched: 09/09/2026, 19:53:11 UTC
Last updated: 10/13/2026, 06:48:17 UTC
Views: 22
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