CVE-2026-7154: Totolink A8000RU CGI cstecgi.cgi setAdvancedInfoShow os command injection

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-27 · updated 2026-10-26
Weakness: CWE-77

Description

A weakness has been identified in Totolink A8000RU 7.1cu.643_b20200521. This affects the function setAdvancedInfoShow of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument tty_server can lead to os command injection. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

Totolink A8000RU: 7.1cu.643_b20200521

References

https://github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_318/README.md
https://vuldb.com/submit/801140
https://vuldb.com/vuln/359753
https://vuldb.com/vuln/359753/cti
https://www.totolink.net/

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