Vulnerability · Published Aug 14, 2026 · Assigned by VulDB

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

High 7.2

In plain English

A high-severity OS command injection in EG3661M from Baicells. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.7% (higher than 90% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)3.7%top 10.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Baicells	EG3661M	BaiCE_BQ6_2.0.5.3_NA

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-389685 | Baicells EG3661M LuCI Web luci os command injection vdb-entry, technical-description
VDB-389685 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-19771 | CVE Analysis and Report third-party-advisory
Submit #869362 | Baicells EG3661M (variant EG3661M-NR6 / PhotonID63M) BaiCE_BQ6_2.0.5.3_NA OS Command Injection third-party-advisory
https://github.com/actuator/cve/blob/main/Baicells/EG3661M.md exploit