EUVD-2026-68541
GHSA-qfcj-fprp-6wmm
Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Adjacent network access required to reach LAN-facing management interface; no authentication needed; only syslog configuration integrity is affected with no confidentiality or availability impact.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
Incorrect access control in the setSyslogCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to alter logging behavior via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
AnalysisAI
Unauthenticated syslog configuration manipulation in TOTOLINK T6 firmware 4.1.5cu.748_B20211015 allows adjacent-network attackers to alter logging behavior by sending a crafted POST request to /cgi-bin/cstecgi.cgi without credentials. The setSyslogCfg function performs no access control checks before applying submitted configuration changes (CWE-284), enabling log suppression or redirection that could obscure evidence of concurrent or subsequent malicious activity. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to have adjacent network access - they must be on the same broadcast domain or LAN segment as the TOTOLINK T6 router running firmware 4.1.5cu.748_B20211015. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 4.3 (Medium) accurately characterizes this as a limited-impact issue: the affected triad shows no confidentiality loss and no availability impact, with only low-severity integrity impact (I:L) restricted to syslog configuration. … 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 | Check TOTOLINK's firmware download page at https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html for an updated firmware release that addresses this access control issue; no specific patched firmware version number is confirmed from available data, so verify with the vendor directly before treating any release as a fix. … Detailed patch versions, workarounds, and compensating controls in full report. |
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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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