Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-3611

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 a
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2375fa1221ee9a4b7abe3f7cee0d3fce3d3c8af83ff519565861cb8fcb4ed2b8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 7 assertions

{"defaultStatus":"unaffected","product":"IQ4E","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/0

{"defaultStatus":"unaffected","product":"IQ3","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/5

{"defaultStatus":"unaffected","product":"IQ4NC","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/3

{"defaultStatus":"unaffected","product":"IQ41x","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/4

{"defaultStatus":"unaffected","product":"IQ422","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/2

{"defaultStatus":"unaffected","product":"IQ412","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"IQECO","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/6
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":10,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

7 source assertions
{"defaultStatus":"unaffected","product":"IQ4E","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/0
{"defaultStatus":"unaffected","product":"IQ3","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/5
{"defaultStatus":"unaffected","product":"IQ4NC","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/3
{"defaultStatus":"unaffected","product":"IQ41x","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/4
{"defaultStatus":"unaffected","product":"IQ422","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/2
{"defaultStatus":"unaffected","product":"IQ412","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"IQECO","vendor":"Honeywell","versions":[{"lessThanOrEqual":"4.36 (build 4.3.7.9)","status":"affected","version":"v3.50_3.44","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/affected/6

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":10,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-306","description":"CWE-306 Missing authentication for critical function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-069-03.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/references/1
{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-069-03"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/references/0
{"url":"https://www.honeywell.com/us/en/contact"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7911630d63ffce8ebcabf8157b85d982ce65e8e3a17d6e34c160360982308b75 · sha256:d862294aed9ffa93… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer