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CVE-2026-3611

🗓️ 12 Mar 2026 20:06:05Reported by icscertType 
cve
 cve
🔗 web.nvd.nist.gov👁 127 Views

Honeywell IQ4x controller exposes web HMI without authentication in factory default, enabling attacker account

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-3611
12 Mar 202620:06
–attackerkb
githubexploit
GithubExploit
building_automation_system_guardian
3 Aug 202602:31
–githubexploit
bdu_fstec
BDU FSTEC
Honeywell IQ4 PLC Authentication Bypass
17 Jul 202600:00
–bdu_fstec
circl
Circl
CVE-2026-3611
10 Mar 202611:00
–circl
cnnvd
CNNVD
Honeywell IQ4x Access Control Vulnerability
12 Mar 202600:00
–cnnvd
cvelist
Cvelist
CVE-2026-3611 Honeywell IQ4x BMS Controller Missing authentication for critical function
12 Mar 202620:06
–cvelist
euvd
EUVD
EUVD-2026-11706
12 Mar 202621:34
–euvd
ics
ICS
Honeywell IQ4 Series BMS Controller (Update A)
10 Mar 202606:00
–ics
kitploit
Kitploit
BAS-Guardian — Updated!
2 Sep 202623:59
–kitploit
nvd
NVD
CVE-2026-3611
12 Mar 202621:16
–nvd
Rows per page
NVD
Vulners
[
  {
    "vendor": "Honeywell",
    "product": "IQ4E",
    "versions": [
      {
        "status": "affected",
        "version": "v3.50_3.44",
        "lessThanOrEqual": "4.36 (build 4.3.7.9)",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "Honeywell",
    "product": "IQ412",
    "versions": [
      {
        "status": "affected",
        "version": "v3.50_3.44",
        "lessThanOrEqual": "4.36 (build 4.3.7.9)",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "Honeywell",
    "product": "IQ422",
    "versions": [
      {
        "status": "affected",
        "version": "v3.50_3.44",
        "lessThanOrEqual": "4.36 (build 4.3.7.9)",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "Honeywell",
    "product": "IQ4NC",
    "versions": [
      {
        "status": "affected",
        "version": "v3.50_3.44",
        "lessThanOrEqual": "4.36 (build 4.3.7.9)",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "Honeywell",
    "product": "IQ41x",
    "versions": [
      {
        "status": "affected",
        "version": "v3.50_3.44",
        "lessThanOrEqual": "4.36 (build 4.3.7.9)",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "Honeywell",
    "product": "IQ3",
    "versions": [
      {
        "status": "affected",
        "version": "v3.50_3.44",
        "lessThanOrEqual": "4.36 (build 4.3.7.9)",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  },
  {
    "vendor": "Honeywell",
    "product": "IQECO",
    "versions": [
      {
        "status": "affected",
        "version": "v3.50_3.44",
        "lessThanOrEqual": "4.36 (build 4.3.7.9)",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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17 Jun 2026 10:43Current
8.1High risk
Vulners AI Score8.1
CVSS 3.110
CVSS 410
EPSS0.06298
SSVC
127