EUVD-2026-67912
GHSA-fmmv-8xc9-f8gr
Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
AV:A because the CGI endpoint is only reachable from the local LAN by default; C:L for read-only policy/state disclosure with no integrity or availability impact.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
Incorrect access control in the getAccessDeviceCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain access-device policy and client state information via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Incorrect access control in the getAccessDeviceCfg handler of TOTOLINK T6 firmware 4.1.5cu.748_B20211015 allows any unauthenticated device on the local network to retrieve access-device policy rules and client connection state by sending a crafted POST request to /cgi-bin/cstecgi.cgi. The CWE-284 flaw exposes MAC-address-level access control lists and client status, enabling network reconnaissance by co-located attackers. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires adjacent-network access - the attacker must be on the same LAN segment or connected to the same Wi-Fi network (including guest networks, if not isolated) as the TOTOLINK T6 running firmware 4.1.5cu.748_B20211015. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.3 score with AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N is well-calibrated for this flaw: adjacent-network constraint meaningfully limits exposure compared to an internet-facing vulnerability, and the confidentiality impact is low (policy/state data, not credentials). … 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 has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
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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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