CVE-2026-5676 MEDIUM

CVE-2026-5676: Totolink A8000R cstecgi.cgi setLanguageCfg missing authentication

Vendor Totolink
Product A8000R
Weakness CWE-306 · Missing auth
Published April 6, 2026
Last update April 7, 2026
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CVSS base score

6.9/10
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:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was identified in Totolink A8000R 5.9c.681_B20180413. This issue affects the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi. Such manipulation of the argument langType leads to missing authentication. The attack can be launched remotely. The exploit is publicly available and might be used.

Key dates

02Disclosure timeline

April 6, 2026 CVE published
April 7, 2026 Record updated