CVE-2026-51741: n/a
Description
Incorrect access control in the clearDiagnosisLog function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to erase diagnosis logs via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-51741 affects TOTOLINK T6 firmware 4.1.5cu.748_B20211015. Due to improper access control in the clearDiagnosisLog function, unauthenticated attackers can send specially crafted POST requests to the /cgi-bin/cstecgi.cgi endpoint to erase diagnosis logs. This flaw corresponds to CWE-284 (Improper Access Control) and allows attackers to disrupt logging functionality without any authentication or user interaction.
Potential Impact
Successful exploitation results in complete erasure of diagnosis logs, impacting system integrity and availability. This can hinder forensic investigations and troubleshooting by removing critical diagnostic information. The vulnerability affects confidentiality, integrity, and availability with a CVSS 3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
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 via network controls or firewall rules to prevent unauthenticated POST requests to /cgi-bin/cstecgi.cgi. Monitor vendor communications for updates on patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-08T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a96d1a2acd9273b49bee4f4
Added to database: 09/01/2026, 13:22:42 UTC
Last enriched: 09/07/2026, 12:58:10 UTC
Last updated: 10/16/2026, 06:48:17 UTC
Views: 61
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