CVE-2026-19771 Baicells EG3661M LuCI Web luci os command injection
Remote attackers can execute arbitrary OS commands via the LuCI web interface due to improper input validation in network diagnostic parameters.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19771?
CVE-2026-19771 is a high-severity command injection vulnerability in Baicells EG3661M, published on 14 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-19771?
How do I fix CVE-2026-19771?
No fix has been published for CVE-2026-19771 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-19771 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19771 exists.
Sources
Also known as GHSA-w9jh-6rx2-4wh5.