EUVD-2026-67896
GHSA-5jpj-2wpc-xp99
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Unauthenticated network POST (AV:N/AC:L/PR:N/UI:N); stolen WPS PIN grants network access (C:H) and the device state changes with a new PIN (I:L); no availability impact.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
Incorrect access control in the getGenerateWiFiWpsPin function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to generate and retrieve a new WPS PIN via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Unauthenticated WPS PIN generation and disclosure in the TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015) lets a remote attacker force the device to mint a new WiFi Protected Setup PIN and read it back by POSTing to the getGenerateWiFiWpsPin handler of /cgi-bin/cstecgi.cgi. Because the endpoint enforces no access control, any network-reachable attacker can obtain a valid WPS PIN and use it to join the wireless network. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the ability to send an HTTP POST to the /cgi-bin/cstecgi.cgi endpoint invoking the getGenerateWiFiWpsPin function on a TOTOLINK T6 at firmware 4.1.5cu.748_B20211015 - no authentication, no user interaction, and no special configuration are needed (PR:N/UI:N/AC:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are mixed. … 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 identified at time of analysis; the references point to TOTOLINK's site and download page (https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html) plus coordination trackers (https://github.com/DarkBoulder/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md), so check those for firmware superseding 4.1.5cu.748_B20211015 and apply it once published. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all TOTOLINK T6 devices in your environment and verify firmware version 4.1.5cu.748_B20211015; disable WiFi Protected Setup (WPS) via device management if the interface supports it, and implement network segmentation to restrict access to router management functions. …
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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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