CVE-2026-3611

EIP tracks 1 public exploit for CVE-2026-3611. PoCs published by spinfosecurity.

AI-analyzed exploit summary This repository contains a defensive security scanner for Building Automation Systems (BAS) that detects exposed BACnet devices, remote access ports, and vendor-specific vulnerabilities (including CVE-2026-3611). It performs non-intrusive port scanning and vulnerability fingerprinting without exploitation capabilities.

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.