CVE-2026-6155 CRITICAL

CVE-2026-6155: Totolink A7100RU CGI cstecgi.cgi setWanCfg os command injection

Vendor Totolink
Product A7100RU
Weakness CWE-78
Published April 13, 2026
Last update April 14, 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 A7100RU 7.4cu.2313. The impacted element is the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument pppoeServiceName 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 13, 2026 CVE published
April 14, 2026 Record updated