CVE-2026-51676: n/a
Description
Incorrect access control in the setAccessDeviceCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to alter access-device policies via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
CVSS v3.1
Score 9.1critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in TOTOLINK T6 firmware 4.1.5cu.748_B20211015 arises from improper access control in the setAccessDeviceCfg function. An attacker can exploit this by sending a specially crafted POST request to the /cgi-bin/cstecgi.cgi endpoint, enabling unauthorized modification of access-device policies. The flaw is categorized under CWE-284 (Improper Access Control) and does not require any privileges or user interaction to exploit. No official patch or remediation guidance is currently available.
Potential Impact
Successful exploitation allows unauthenticated attackers to alter access-device policies, potentially compromising device security and network access controls. The vulnerability impacts confidentiality and integrity with no impact on availability. Given the CVSS score of 9.1, the risk is critical.
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 affected device's management interfaces from untrusted networks and monitor for suspicious POST requests targeting /cgi-bin/cstecgi.cgi.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-08T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a958ab9acd9273b492f08bd
Added to database: 08/31/2026, 14:07:53 UTC
Last enriched: 09/07/2026, 15:03:26 UTC
Last updated: 10/15/2026, 18:48:21 UTC
Views: 95
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