EUVD-2026-67894
GHSA-336c-5rgq-ch98
Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
AV:A reflects the LAN-only adjacency requirement; C:H is warranted because a full DDNS account password is exposed, not merely configuration metadata.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
Incorrect access control in the getDdnsCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain DDNS configuration, including domain, username, and password, via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Unauthenticated DDNS credential disclosure in TOTOLINK T6 firmware 4.1.5cu.748_B20211015 allows any attacker on the local network to retrieve the router's configured DDNS domain, username, and password by sending a crafted POST request to /cgi-bin/cstecgi.cgi. The getDdnsCfg function lacks any authentication gate (CWE-284), returning sensitive DDNS account credentials without verifying session state. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network adjacency to the TOTOLINK T6 - the attacker must be on the same LAN segment, Wi-Fi network, or directly connected subnet as the router. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, score 4.3) rates this as medium severity with an adjacent-network attack vector, meaning exploitation requires the attacker to be on the same LAN segment or Wi-Fi network as the router - not reachable from the open internet under default configurations. … 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. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
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External POC / Exploit Code
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