Incorrect access control in the getMeshPortalTable function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain mesh… (CVE-2026-51637)
Description
An incorrect access control vulnerability exists in the getMeshPortalTable function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. This flaw allows unauthenticated attackers to retrieve mesh portal table information by sending a crafted POST request to the /cgi-bin/cstecgi.cgi endpoint. The vulnerability has a CVSS score of 4.3, indicating a medium severity level, 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
The TOTOLINK T6 device running firmware version 4.1.5cu.748_B20211015 contains an access control weakness in the getMeshPortalTable function. This vulnerability enables unauthenticated remote attackers to obtain sensitive mesh portal table data by issuing a specially crafted POST request to the /cgi-bin/cstecgi.cgi CGI endpoint. The issue is categorized 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 mesh portal table information, potentially exposing network topology or configuration details. The vulnerability does not allow modification or disruption of service, as integrity and availability impacts are not indicated.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected endpoint by network controls or firewall rules to limit exposure to untrusted networks.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3qjc-xccj-8hhf
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-51637"]
Threat ID: 6a92f7f7acd9273b49e86c16
Added to database: 08/29/2026, 15:17:11 UTC
Last enriched: 09/09/2026, 19:38:14 UTC
Last updated: 10/12/2026, 06:48:17 UTC
Views: 28
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