CVE-2026-9407

CRITICAL

Totolink A8000RU Web Management cstecgi.cgi setFirewallType os command injection

Title source: cna

Description

A security vulnerability has been detected in Totolink A8000RU 7.1cu.643_b20200521. Affected by this vulnerability is the function setFirewallType of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. The manipulation of the argument firewallType leads to os command injection. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-365388 | Totolink A8000RU Web Management cstecgi.cgi setFirewallType os command injection

https://vuldb.com/vuln/365388

Signature, Permissions Required signature permissions-required

VDB-365388 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/365388/cti

Third Party Advisory third-party-advisory

Submit #813442 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/813442

Exploit exploit

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_339/README.md

View Exploit ZIP pw:eip

Product product

https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0089

EPSS Percentile 75.9%

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 May 25, 2026

Tracked Since May 25, 2026