Incorrect access control in the getDiagnosisCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain diagnostic… (CVE-2026-51649)
Description
An incorrect access control vulnerability exists in the getDiagnosisCfg function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. This flaw allows unauthenticated attackers to retrieve diagnostic configuration and ping log contents by sending a crafted POST request to /cgi-bin/cstecgi.cgi. No CVSS score or patch information is currently available for this vulnerability.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in TOTOLINK T6 4.1.5cu.748_B20211015 involves improper access control in the getDiagnosisCfg function. An attacker without authentication can exploit this by sending a specially crafted POST request to the endpoint /cgi-bin/cstecgi.cgi, resulting in unauthorized disclosure of diagnostic configuration data and ping logs. This could potentially expose sensitive device information to attackers.
Potential Impact
Unauthenticated attackers can obtain diagnostic configuration details and ping log contents from the affected device. This unauthorized information disclosure could aid attackers in further reconnaissance or exploitation efforts against the device or network.
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 and monitor for suspicious POST requests targeting /cgi-bin/cstecgi.cgi. Follow vendor updates for any released patches or official mitigations.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3w2r-c4w7-whmh
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-51649"]
Threat ID: 6a92f7f7acd9273b49e86bac
Added to database: 08/29/2026, 15:17:11 UTC
Last enriched: 09/09/2026, 19:38:17 UTC
Last updated: 10/11/2026, 18:48:20 UTC
Views: 26
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