EUVD-2026-67909
GHSA-4j9g-3r37-7pj6
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Network-accessible unauthenticated endpoint; C:H justified by WiFi encryption key disclosure; no integrity or availability impact applies.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
Incorrect access control in the getSysStatusCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain sensitive information such as operation mode, firmware version, serial number, WAN/LAN IP addresses, WiFi SSID, encryption keys, and connected client statistics via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Unauthenticated access to the getSysStatusCfg handler in TOTOLINK T6 firmware 4.1.5cu.748_B20211015 exposes a broad set of sensitive device data - including WiFi encryption keys, SSID, WAN/LAN IP addresses, firmware version, serial number, and connected client statistics - to any attacker with network reachability to the management interface. The exposure of raw WiFi key material is notably more impactful than a typical status-read disclosure: recovered credentials can be used to join the wireless network and pivot to LAN-side targets. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions are required beyond network reachability to the router's HTTP management interface (typically port 80 or 8080). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) accurately reflects the unauthenticated, zero-complexity network attack surface and high confidentiality impact. … 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 for firmware 4.1.5cu.748_B20211015. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory all TOTOLINK T6 devices on your network and document current firmware versions; verify management interface network access controls and confirm it is not exposed to untrusted networks. …
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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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