CVE-2026-5975 CRITICAL

CVE-2026-5975: Totolink A7100RU CGI cstecgi.cgi setDmzCfg os command injection

Vendor Totolink
Product A7100RU
Weakness CWE-78
Published April 9, 2026
Last update April 9, 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 vulnerability was identified in Totolink A7100RU 7.4cu.2313_b20191024. The impacted element is the function setDmzCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument wanIdx leads to os command injection. The attack may be performed from remote. The exploit is publicly available and might be used.

Key dates

02Disclosure timeline

April 9, 2026 CVE published
April 9, 2026 Record updated