EUVD-2026-68751
GHSA-q2cf-4xq7-4g9h
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Network-accessible endpoint, no auth required, read-only log disclosure with no integrity or availability impact.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
Incorrect access control in the showSyslog function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to retrieve recent system logs via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Unauthenticated system log disclosure in TOTOLINK T6 router firmware 4.1.5cu.748_B20211015 allows any network-accessible attacker to retrieve recent system logs by sending a crafted POST request to the /cgi-bin/cstecgi.cgi endpoint. The showSyslog function implements no access control check (CWE-284), exposing operational data that may include internal IP topology, admin activity, DNS queries, and connection metadata. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special configuration is required - the vulnerability exists in the default firmware of TOTOLINK T6 4.1.5cu.748_B20211015 and requires only that the attacker can send an HTTP POST request to the /cgi-bin/cstecgi.cgi endpoint. … 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:H/I:N/A:N) accurately reflects the network-accessible, zero-authentication nature of this information disclosure. … 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 or fixed firmware version was identified in the provided reference data at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all TOTOLINK T6 routers in use and identify devices running firmware 4.1.5cu.748_B20211015; verify network exposure by checking if the /cgi-bin/cstecgi.cgi endpoint is accessible from 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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