CVE-2026-9407 CRITICAL

CVE-2026-9407: Totolink A8000RU Web Management cstecgi.cgi setFirewallType os command injection

Vendor Totolink
Product A8000RU
Weakness CWE-78
Published May 24, 2026
Last update May 26, 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 A8000RU 7.1cu.643_b20200521. Affected by this vulnerability is the function setFirewallType of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument firewallType leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.

Key dates

02Disclosure timeline

May 24, 2026 CVE published
May 26, 2026 Record updated