CVE-2026-7124

CRITICAL

Totolink A8000RU CGI cstecgi.cgi setIpv6LanCfg os command injection

Title source: cna

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.

References (5)

Core 5

Core References

Product product

https://www.totolink.net/

Vdb Entry, Technical Description vdb-entry technical-description

VDB-359723 | Totolink A8000RU CGI cstecgi.cgi setIpv6LanCfg os command injection

https://vuldb.com/vuln/359723

Signature, Permissions Required signature permissions-required

VDB-359723 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/359723/cti

Third Party Advisory third-party-advisory

Submit #801005 | Totolink A8000RU 7.1cu.643_b20200521 Command Injection

https://vuldb.com/submit/801005

Exploit exploit

https://github.com/Litengzheng/vuldb_new2/tree/main/A8000RU/vul_309/README.md

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