CVE-2026-9386 CRITICAL

CVE-2026-9386: Totolink A8000RU Web Management cstecgi.cgi setLanguageCfg 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 vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument lang 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

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