CVE-2026-7823 CRITICAL

CVE-2026-7823: Totolink A8000RU cstecgi.cgi setAppFilterCfg os command injection

Vendor Totolink
Product A8000RU
Weakness CWE-78
Published May 5, 2026
Last update May 5, 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. Affected is the function setAppFilterCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument enable results in os command injection. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Key dates

02Disclosure timeline

May 5, 2026 CVE published
May 5, 2026 Record updated