EUVD-2026-69208
GHSA-x74f-985m-c99f
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
MQTT broker network-accessible with no auth; impact limited to station list integrity with no code execution, confidentiality, or availability effect.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
2DescriptionCVE.org
Incorrect access control in the updatePriStaList function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to refresh the primary station list via sending a crafted MQTT message to the cs_broker component.
AnalysisAI
Unauthenticated access control bypass in TOTOLINK T6 firmware 4.1.5cu.748_B20211015 allows remote attackers to manipulate the router's primary station list by sending a crafted MQTT message directly to the cs_broker component. The updatePriStaList function performs no authentication check before processing requests, enabling arbitrary refresh or overwrite of station associations. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required - the CVSS vector is PR:N/UI:N confirming unauthenticated exploitation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.3 Medium score reflects a network-accessible (AV:N), low-complexity (AC:L), unauthenticated (PR:N/UI:N) attack with limited integrity impact (I:L) and no confidentiality or availability consequence. … 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 has been identified in the available references 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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