CVE-2026-9477 CRITICAL

CVE-2026-9477: Totolink A8000RU Web Management cstecgi.cgi setAccessDeviceCfg os command injection

Vendor Totolink
Product A8000RU
Weakness CWE-78
Published May 25, 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 flaw has been discovered in Totolink A8000RU 7.1cu.643_b20200521. This issue affects the function setAccessDeviceCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument mac results in os command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.

Key dates

02Disclosure timeline

May 25, 2026 CVE published
May 26, 2026 Record updated