CVE-2026-51638: n/a
Description
Incorrect access control in the getWiFiGuestCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain guest Wi-Fi configuration information via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
CVSS v3.1
Score 4.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in TOTOLINK T6 4.1.5cu.748_B20211015 arises from incorrect access control in the getWiFiGuestCfg function. This flaw permits unauthenticated attackers to access guest Wi-Fi configuration data by issuing a crafted POST request to the /cgi-bin/cstecgi.cgi CGI endpoint. The issue is classified under CWE-284 (Improper Access Control) and has a CVSS 3.1 base score of 4.3, indicating a medium impact primarily on confidentiality. There is no known exploit in the wild and no vendor advisory or patch information is currently available.
Potential Impact
An unauthenticated attacker can obtain guest Wi-Fi configuration information, potentially exposing network details that could aid further attacks or reconnaissance. The vulnerability impacts confidentiality but does not affect integrity or availability. No evidence of active exploitation is reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the affected device's management interfaces and monitor for unusual POST requests to /cgi-bin/cstecgi.cgi. Avoid exposing the device management interface to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-08T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a91e407acd9273b4942e775
Added to database: 08/28/2026, 19:39:51 UTC
Last enriched: 09/07/2026, 14:29:23 UTC
Last updated: 10/11/2026, 06:48:17 UTC
Views: 30
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