CVE-2026-9407 - Totolink A8000RU Web Management cstecgi.cgi setFirewallType os command injection

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CRITICAL

Totolink A8000RU Web Management cstecgi.cgi setFirewallType os command injection

Published May 24, 2026

9.3

CRITICAL

CVSS 4.0

EPSS 3.25%

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.

Affected products

Vendor TOTOLINK Product n/a Default
n/a
- Version
  7.1cu.643_b20200521
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

TOTOLINK

n/a

Version	Status	Constraints
7.1cu.643_b20200521	affected	-

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-77

CWE-78

OS Command Injection

References (6)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-31610
Advisory
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_339/README.md
exploit
https://vuldb.com/submit/813442
third-party-advisory
https://vuldb.com/vuln/365388
vdb-entrytechnical-description
https://vuldb.com/vuln/365388/cti
signaturepermissions-required
https://www.totolink.net/
product

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-31610		Advisory
https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_339/README.md		exploit
https://vuldb.com/submit/813442		third-party-advisory
https://vuldb.com/vuln/365388		vdb-entrytechnical-description
https://vuldb.com/vuln/365388/cti		signaturepermissions-required
https://www.totolink.net/		product