EUVD-2026-68536
GHSA-qc8c-mxh4-4jrh
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Network-reachable endpoint, no authentication required per description; integrity-only impact as only NTP config is writable, no confidentiality or availability effect.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
Incorrect access control in the setNtpCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to alter time synchronization settings via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Unauthenticated NTP configuration manipulation in TOTOLINK T6 firmware 4.1.5cu.748_B20211015 allows any network-reachable attacker to overwrite time synchronization settings by sending a crafted POST request directly to /cgi-bin/cstecgi.cgi. The setNtpCfg handler performs no access control check before processing the request, a CWE-284 (Improper Access Control) defect that the CVSS vector confirms is exploitable with no privileges and no user interaction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The router management web interface must be network-reachable by the attacker - either from the local LAN (default) or from the internet if the remote management feature is enabled. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N) accurately captures the attack surface: network-reachable, zero-click, zero-credential exploitation with a high integrity 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 patched firmware version has been identified in the available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all TOTOLINK T6 devices running firmware 4.1.5cu.748_B20211015 and restrict network access to the /cgi-bin/cstecgi.cgi endpoint via firewall rules, limiting exposure to trusted administrative 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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