EUVD-2026-67898
GHSA-239m-fwjx-g3mq
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Unauthenticated network read of the WPS PIN is pure confidentiality loss; no direct integrity or availability impact, so I:N/A:N rather than the source's I:H.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
Incorrect access control in the getWiFiWpsCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain WPS configuration, including the current PIN, via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Unauthenticated information disclosure in the TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015) lets remote attackers read the device's WPS configuration - including the active WPS PIN - by sending a crafted POST request to /cgi-bin/cstecgi.cgi. Because the getWiFiWpsCfg handler performs no access-control check, any party who can reach the web interface can harvest the PIN and use it to derive the Wi-Fi passphrase and join the network. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the router's HTTP management endpoint /cgi-bin/cstecgi.cgi and the ability to send a POST invoking the getWiFiWpsCfg function; no authentication, credentials, or user interaction are needed (PR:N/UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS vector (AV:N/AC:L/PR:N/UI:N, base 9.1) indicates a network-reachable, low-complexity, unauthenticated attack, which aligns with the description of an unauthenticated POST request. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch version is identified in the provided data at time of analysis; check the TOTOLINK download portal (https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html) for a firmware update newer than 4.1.5cu.748_B20211015 and apply it once available. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all TOTOLINK T6 routers in your environment using network discovery tools and document firmware versions deployed. …
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
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