{"answers":{"affected":"It affects 5 products.","exploited":"There is no known exploitation of CVE-2026-3611 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-3611 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-3611 is a critical missing authorization vulnerability in Honeywell IQ3, published on 12 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-3611 and fix it if it is affected.\n\nWhat it is: CVE-2026-3611 is a critical missing authorization vulnerability in Honeywell IQ3, published on 12 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-3611 in the wild and no public exploit code.\n\nAffected product: Honeywell IQ3. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-3611/ (Markdown: https://insights.sbomify.com/CVE-2026-3611/index.md)","id":"CVE-2026-3611","markdown":"https://insights.sbomify.com/CVE-2026-3611/index.md","name":"CVE-2026-3611","record":{"aliases":["GHSA-3p4g-vg78-jqrv"],"analysis":{"component_type":"ics_ot","fix_type":"configuration_change","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Building management controller","requires_auth":"none","summary":"Remote attackers can create admin accounts on Honeywell IQ4x controllers due to missing authentication, locking out legitimate operators.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"icscert","cpe":[{"product":"iq412_firmware","vendor":"honeywell"},{"product":"iq41x_firmware","vendor":"honeywell"},{"product":"iq422_firmware","vendor":"honeywell"},{"product":"iq4e_firmware","vendor":"honeywell"},{"product":"iq4nc_firmware","vendor":"honeywell"}],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-08-03","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-03T02:31:36Z","kind":"github_poc","ref":"https://github.com/spinfosecurity/BAS-Guardian","stars":1,"title":"Free BACnet/BMS vulnerability scanner for building automation systems. Detects CVE-2026-3611 (CVSS 10.0), CVE-2026-24060, and exposed HVAC/BAS controllers via PowerShell or Bash."}],"tier":"poc_unverified"},"has_fix":null,"headline":"Honeywell IQ4x BMS Controller Missing authentication for critical function","id":"CVE-2026-3611","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Wavlink WL-NU516U1 OTA Online Upgrade adm.cgi sub_405AF4 command injection","id":"CVE-2026-3612"},"packages":[],"prev":{"headline":"HSC Cybersecurity Mailinspector URL mliUserValidation.php cross site scripting","id":"CVE-2026-3610"},"products":["IQ3","IQ412","IQ41x","IQ422","IQ4E","IQ4NC","IQECO"],"published":"2026-03-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-03-30","vendors":["Honeywell"]},"summary":"Remote attackers can create admin accounts on Honeywell IQ4x controllers due to missing authentication, locking out legitimate operators.","url":"https://insights.sbomify.com/CVE-2026-3611/"}