EUVD-2026-68638
GHSA-87p9-c5ph-5qc9
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Unauthenticated network trigger justifies AV:N/AC:L/PR:N, but direct impact is only enabling WPS; full network access needs wireless-range follow-up, so C/I are downgraded to L and A:N.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
Incorrect access control in the setWiFiWpsStart function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to open a wireless pairing window via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Improper access control in TOTOLINK T6 router firmware 4.1.5cu.748_B20211015 lets unauthenticated remote attackers invoke the setWiFiWpsStart function via a crafted POST request to /cgi-bin/cstecgi.cgi, forcing the device to open a WPS wireless pairing window without any credentials. Because WPS pairing enables a nearby attacker to join the wireless network, this exposes the LAN and its traffic to unauthorized access. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Triggering the WPS window requires only network reachability of the HTTP endpoint /cgi-bin/cstecgi.cgi on a TOTOLINK T6 running firmware 4.1.5cu.748_B20211015, with no authentication (PR:N), no user interaction, and a crafted POST calling the setWiFiWpsStart function - so the trigger itself has no special configuration prerequisite beyond the endpoint being reachable. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | 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 patched firmware version is identified in the provided data, and reference links point only to TOTOLINK's general site and a firmware download page rather than a named fixed build - check the TOTOLINK download page (https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html) for a firmware release later than 4.1.5cu.748_B20211015 and apply it if available. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory all TOTOLINK T6 routers running firmware 4.1.5cu.748_B20211015 and isolate affected devices from production environments or disable WPS functionality immediately. …
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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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