CVE-2026-7156 — CRITICAL (9.8)

Vulnerability Description

A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument HTTP results in os command injection. The attack may be launched remotely. The exploit is now public 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-2026-7156?

CVE-2026-7156 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. Affected is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argumen...

How severe is CVE-2026-7156?

CVE-2026-7156 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-2026-7156?

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