CVE-2026-19771: Baicells EG3661M LuCI Web luci os command injection

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-14 · updated 2026-08-18
Weakness: CWE-77

Description

A vulnerability was identified in Baicells EG3661M BaiCE_BQ6_2.0.5.3_NA. This impacts an unknown function of the file /cgi-bin/luci of the component LuCI Web Interface. Such manipulation of the argument MaxHops/Timeout/Size leads to os command injection. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Baicells EG3661M: BaiCE_BQ6_2.0.5.3_NA

References

https://github.com/actuator/cve/blob/main/Baicells/EG3661M.md
https://vuldb.com/cve/CVE-2026-19771
https://vuldb.com/submit/869362
https://vuldb.com/vuln/389685
https://vuldb.com/vuln/389685/cti

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