CVE-2026-7124 - Totolink A8000RU CGI cstecgi.cgi setIpv6LanCfg os command injection

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CRITICAL

Totolink A8000RU CGI cstecgi.cgi setIpv6LanCfg os command injection

Published Apr 27, 2026

9.3

CRITICAL

CVSS 4.0

EPSS 3.25%

Description

A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. Affected by this vulnerability is the function setIpv6LanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument addrPrefixLen can lead to os command injection. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized.

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 (5)

https://github.com/Litengzheng/vuldb_new2/tree/main/A8000RU/vul_309/README.md
exploit
https://vuldb.com/submit/801005
third-party-advisory
https://vuldb.com/vuln/359723
vdb-entrytechnical-description
https://vuldb.com/vuln/359723/cti
signaturepermissions-required
https://www.totolink.net/
product

Link	Providers	Tags
https://github.com/Litengzheng/vuldb_new2/tree/main/A8000RU/vul_309/README.md		exploit
https://vuldb.com/submit/801005		third-party-advisory
https://vuldb.com/vuln/359723		vdb-entrytechnical-description
https://vuldb.com/vuln/359723/cti		signaturepermissions-required
https://www.totolink.net/		product