CVE-2026-7136 CRITICAL

CVE-2026-7136: Totolink A8000RU CGI cstecgi.cgi setDmzCfg os command injection

Vendor Totolink
Product A8000RU
Weakness CWE-78
Published April 27, 2026
Last update April 27, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. Affected by this issue is the function setDmzCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument wanIdx can lead to os command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

Key dates

02Disclosure timeline

April 27, 2026 CVE published
April 27, 2026 Record updated