Unauthenticated Wi-Fi credential disclosure via missing handler authentication
Published Aug 28, 2026 · Updated Aug 28, 2026
Incorrect access control in TOTOLINK T6 4.1.5cu.748_B20211015 allows remote attackers to read SSIDs and Wi-Fi keys. The cstecgi.cgi dispatcher invokes getWiFiBasicCfg for a POST request whose topicurl selects that handler without first requiring an authenticated session, and the handler returns core wireless configuration. The reported gate is network reachability of the router's web management interface; no authenticated session is required, and the bounded consequence is disclosure of wireless settings.
Summary
What happened
Incorrect access control in TOTOLINK T6 4.1.5cu.748_B20211015 allows remote attackers to read SSIDs and Wi-Fi keys. The cstecgi.cgi dispatcher invokes getWiFiBasicCfg for a POST request whose topicurl selects that handler without first requiring an authenticated session, and the handler returns core wireless configuration. The reported gate is network reachability of the router's web management interface; no authenticated session is required, and the bounded consequence is disclosure of wireless settings.
The record
- CVE
- CVE-2026-51634
- Published
- Aug 28, 2026
- Updated
- Aug 28, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1552
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 28, 2026CVE publishedPublication date reported by the CVE source.
- Aug 28, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
- getWiFiBasicCfg crafted POST requestproof of concept · unverified
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Technologies
Your stack
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Your stack
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