EUVD-2026-68636
GHSA-hwv4-69v9-mq96
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Unauthenticated network POST with no UI (AV:N/AC:L/PR:N/UI:N); manipulating WAN dial state alters config and can drop connectivity (I:H/A:H) but discloses no data (C:N), unlike the input's C:H.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
Incorrect access control in the setManualDialCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to manipulate WAN dial state via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Access-control bypass in the TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015) lets unauthenticated remote attackers alter the WAN dial (internet connection) state by POSTing a crafted request to the setManualDialCfg handler in /cgi-bin/cstecgi.cgi. Rated CVSS 9.1 and flagged as an authentication bypass, it requires no credentials and no user interaction, though EPSS is low (0.16%, 6th percentile) and there is no public exploit identified at time of analysis. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the T6's HTTP management service and the ability to POST to the setManualDialCfg function at /cgi-bin/cstecgi.cgi; 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 signals conflict and warrant a nuanced priority. … 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 (only a coordination disclosure and the TOTOLINK download portal), so treat this as no vendor-released patch confirmed at time of analysis - check the TOTOLINK download page for the T6 (https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html) for a firmware build newer than 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, identify all TOTOLINK T6 routers on the network and segregate them from critical management access by restricting administrative interfaces to trusted networks only. …
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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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