CVE-2026-3611— Honeywell IQ4x 访问控制错误漏洞

Honeywell IQ4x BMS Controller Missing authentication for critical function

The Honeywell IQ4x building management controller, exposes its full web-based HMI without authentication in its factory-default configuration. With no user module configured, security is disabled by design and the system operates under a System Guest (level 100) context, granting read/write privileges to any party able to reach the HTTP interface. Authentication controls are only enforced after a web user is created via U.htm, which dynamically enables the user module. Because this function is accessible prior to authentication, a remote user can create a new account with administrative read/write permissions enabling the user module and imposing authentication under attacker-controlled credentials. This action can effectively lock legitimate operators out of local and web-based configuration and administration.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

关键功能的认证机制缺失

Honeywell IQ4x 访问控制错误漏洞

Honeywell IQ4x是美国Honeywell公司的一系列楼宇自动化系统中的网络控制器。 Honeywell IQ4x存在访问控制错误漏洞，该漏洞源于默认配置下未启用身份验证，可能导致远程用户创建具有管理权限的账户。

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