CVE-2026-5996 CRITICAL

CVE-2026-5996: Totolink A7100RU CGI cstecgi.cgi setAdvancedInfoShow os command injection

Vendor Totolink
Product A7100RU
Weakness CWE-78
Published April 10, 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 security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. The affected element is the function setAdvancedInfoShow of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument tty_server leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

Key dates

02Disclosure timeline

April 10, 2026 CVE published
April 14, 2026 Record updated