CVE-2026-7136

CRITICAL

Totolink A8000RU CGI cstecgi.cgi setDmzCfg os command injection

Title source: cna

Description

A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. Affected by this issue is the function setDmzCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument wanIdx can lead to os command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

References (5)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/359735

[Signature, Permissions Required] https://vuldb.com/vuln/359735/cti

[Third Party Advisory] https://vuldb.com/submit/801007

[Exploit] https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_311/README.md

View Exploit ZIP pw:eip

[Product] https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0089

EPSS Percentile 75.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

Totolink/A8000RU 7.1cu.643_b20200521

Published Apr 27, 2026

Tracked Since Apr 27, 2026