CVE-2026-7243

CRITICAL

Totolink A8000RU CGI cstecgi.cgi setRadvdCfg os command injection

Title source: cna

Description

A vulnerability was identified in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setRadvdCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument maxRtrAdvInterval leads to os command injection. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

References (5)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/359850

[Signature, Permissions Required] https://vuldb.com/vuln/359850/cti

[Third Party Advisory] https://vuldb.com/submit/803266

[Exploit] https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_327/README.md

View Exploit ZIP pw:eip

[Product] https://www.totolink.net/

Scores

CVSS v3 9.8

EPSS 0.0089

EPSS Percentile 75.6%

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 28, 2026

Tracked Since Apr 28, 2026