CVE-2026-9458 CRITICAL

CVE-2026-9458: Totolink A8000RU Web Management cstecgi.cgi setWanCfg os command injection

Vendor Totolink
Product A8000RU
Weakness CWE-78
Published May 25, 2026
Last update May 28, 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. The impacted element is the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument enabled 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 25, 2026 CVE published
May 28, 2026 Record updated