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)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-359735 | Totolink A8000RU CGI cstecgi.cgi setDmzCfg os command injection

https://vuldb.com/vuln/359735

Signature, Permissions Required signature permissions-required

VDB-359735 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/359735/cti

Third Party Advisory third-party-advisory

Submit #801007 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/801007

Exploit exploit

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

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0177

EPSS Percentile 75.1%

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