CVE-2026-6112: Totolink A7100RU CGI cstecgi.cgi setRadvdCfg 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: 2026-04-12 · updated 2026-10-26
Weakness: CWE-77

Description

A weakness has been identified in Totolink A7100RU 7.4cu.2313_b20191024. Affected is the function setRadvdCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument maxRtrAdvInterval causes os command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

Totolink A7100RU: 7.4cu.2313_b20191024

References

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_177/README.md
https://vuldb.com/submit/792245
https://vuldb.com/vuln/356972
https://vuldb.com/vuln/356972/cti
https://www.totolink.net/

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