EUVD-2026-68652
GHSA-7286-mf58-cxj5
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Unauthenticated remote POST alters filter policy (integrity), so I:H, PR:N, AC:L; no data disclosure or availability loss, so C:N/A:N, unlike the input's C:H.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
Incorrect access control in the setUrlFilterRules function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to alter browsing policies via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Unauthenticated policy tampering in the TOTOLINK T6 router (firmware 4.1.5cu.748_B20211015) lets remote attackers overwrite URL/browsing filter rules by posting to the /cgi-bin/cstecgi.cgi endpoint's setUrlFilterRules function without any credentials. The flaw is a broken access-control check (CWE-284) reported by MITRE with a CVSS of 9.1; no public exploit is identified at time of analysis and EPSS is low (0.18%, 7th percentile).
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the TOTOLINK T6 web management endpoint /cgi-bin/cstecgi.cgi and the ability to send a crafted POST invoking the setUrlFilterRules function; per CVSS PR:N/UI:N no authentication and no user interaction are needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N = 9.1) describes trivially reachable, unauthenticated network exploitation, which is credible for an exposed router management endpoint. … 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 is identified in the available data at time of analysis, so no exact fix version can be cited; check the TOTOLINK download portal (https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html) for an updated T6 firmware image and apply it once published. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all TOTOLINK T6 routers and verify firmware version 4.1.5cu.748_B20211015 or adjacent releases; immediately restrict administrative access to these devices to a trusted management network 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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