PatchTheCVEiq4nc firmware vulnerabilities and fixes
Recent CVEs affecting iq4nc firmware, with upgrade or downgrade steps. 1 tracked.
Also searched as: iq4ncfirmware.
iq4nc firmware has 1 tracked vulnerability, 1 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-03-12. Highest priority: CVE-2026-3611 (score 66/100).
- CVE-2026-3611 CRITICAL 10.0 UPGRADE UPGRADE The Honeywell IQ4x building management controller, exposes its full web-based HMI without authentication in it
FAQ
How do I fix iq4nc firmware vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is iq4nc firmware being exploited right now?
None of the tracked iq4nc firmware CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which iq4nc firmware CVE should I patch first?
CVE-2026-3611 currently ranks highest (66/100): The Honeywell IQ4x building management controller, exposes its full web-based HMI without authentication in it.