CVE-2026-7121 CRITICAL

CVE-2026-7121: Totolink A8000RU CGI cstecgi.cgi setWizardCfg 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 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.

Key dates

02Disclosure timeline

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