CVE-2026-7121

CRITICAL

Totolink A8000RU CGI cstecgi.cgi setWizardCfg os command injection

Title source: cna

Description

A flaw has been found in Totolink A8000RU 7.1cu.643_b20200521. This affects the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument wizard causes os command injection. It is possible to initiate the attack remotely. The exploit has been published and may be used.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-359720 | Totolink A8000RU CGI cstecgi.cgi setWizardCfg os command injection

https://vuldb.com/vuln/359720

Signature, Permissions Required signature permissions-required

VDB-359720 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/359720/cti

Third Party Advisory third-party-advisory

Submit #800933 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/800933

Exploit exploit

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_306/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0195

EPSS Percentile 77.5%

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