Incorrect access control in the getMeshNeighborTable function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain mesh… (CVE-2026-51640)
Description
An incorrect access control vulnerability exists in the getMeshNeighborTable function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. This flaw allows unauthenticated attackers to retrieve mesh neighbor information by sending a crafted POST request to the /cgi-bin/cstecgi.cgi endpoint.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in TOTOLINK T6 4.1.5cu.748_B20211015 is due to improper access control in the getMeshNeighborTable function. An attacker without authentication can exploit this by sending a specially crafted POST request to the /cgi-bin/cstecgi.cgi interface, thereby obtaining mesh neighbor data. No CVSS score or detailed impact metrics are provided. No patch or remediation information is available from the source data.
Potential Impact
An unauthenticated attacker can access mesh neighbor information, which may reveal network topology or device relationships within the mesh network. This could potentially aid further reconnaissance or targeted attacks, but no direct impact on device control or data integrity is described.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the device management interface and monitor for suspicious POST requests to /cgi-bin/cstecgi.cgi if possible.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-wmfp-mp4j-23gh
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-51640"]
Threat ID: 6a92f7f4acd9273b49e80d5e
Added to database: 08/29/2026, 15:17:08 UTC
Last enriched: 09/09/2026, 19:53:27 UTC
Last updated: 10/12/2026, 06:48:17 UTC
Views: 21
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