CVE-2026-51668: n/a
Description
CVE-2026-51668 is a high-severity vulnerability in TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. It involves incorrect access control in the setLanguageCfg function, allowing unauthenticated attackers to modify the device's language configuration by sending a crafted POST request to /cgi-bin/cstecgi.cgi.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-51668 affects TOTOLINK T6 firmware 4.1.5cu.748_B20211015. Due to improper access control in the setLanguageCfg function, an unauthenticated attacker can send a specially crafted POST request to the /cgi-bin/cstecgi.cgi endpoint to alter the language configuration settings. This issue is classified under CWE-284 (Improper Access Control) and has a CVSS v3.1 base score of 7.5, indicating high severity. There is no information about available patches or vendor advisories, and no known exploits in the wild have been reported.
Potential Impact
An unauthenticated attacker can modify the language configuration of the TOTOLINK T6 device remotely. While the confidentiality and availability impacts are not indicated, the integrity of the device's configuration is compromised. This could potentially be leveraged for further attacks or to disrupt normal device operation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. In the absence of an official fix, restrict network access to the device's management interface and monitor for suspicious POST requests to /cgi-bin/cstecgi.cgi. Follow up with TOTOLINK for updates on patches or official mitigations.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-93x7-hmfr-7pxq
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-51668"]
Threat ID: 6a95bf04acd9273b4966779c
Added to database: 08/31/2026, 17:51:00 UTC
Last enriched: 09/07/2026, 22:52:17 UTC
Last updated: 10/15/2026, 06:48:16 UTC
Views: 68
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