CVE-2026-7121 — CRITICAL (9.8)

Vulnerability Description

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. This affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument wizard causes os command injection. It is possible to initiate the attack remotely. The exploit has been published and may be used.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-78 CWE-77

References

FAQ

What is CVE-2026-7121?

CVE-2026-7121 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. This affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument w...

How severe is CVE-2026-7121?

CVE-2026-7121 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-7121?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.