CVE-2026-6113: Totolink A7100RU CGI cstecgi.cgi setTtyServiceCfg 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 security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this vulnerability is the function setTtyServiceCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument ttyEnable leads to os command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

Affected products

Totolink A7100RU: 7.4cu.2313_b20191024

References

https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_178/README.md
https://vuldb.com/submit/792246
https://vuldb.com/vuln/356973
https://vuldb.com/vuln/356973/cti
https://www.totolink.net/

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