CVE-2026-6138 CRITICAL

CVE-2026-6138: Totolink A7100RU CGI cstecgi.cgi setAccessDeviceCfg os command injection

Vendor Totolink
Product A7100RU
Weakness CWE-78
Published April 13, 2026
Last update April 13, 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 A7100RU 7.4cu.2313_b20191024. The impacted element is the function setAccessDeviceCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument mac causes os command injection. The attack can be initiated remotely. The exploit has been published and may be used.

Key dates

02Disclosure timeline

April 13, 2026 CVE published
April 13, 2026 Record updated