Vulnerability-Lookup

CVE-2026-64896 (GCVE-0-2026-64896)

Vulnerability from cvelistv5 – Published: 2026-08-27 14:42 – Updated: 2026-08-27 19:31

Title

T2000 open debug port

Summary

Debug and Test Interface With Improper Access Control vulnerability in Johnson Controls T2000 allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects T2000: before 31.6.

Severity

5.2 (Medium)


                        
                          CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-27 19:31 UTC

CWE

Debug and Test Interface With Improper Access Control
CWE-284 - Improper Access Control
CWE-732 - Incorrect Permission Assignment for Critical Resource

Assigner

jci icscert root

References

1 reference

URL	Tags
https://www.johnsoncontrols.com/trust-center/cybe…

Impacted products

1 product

Vendor	Product	Version	CPE status
Johnson Controls	T2000	Affected: 0 , < 31.6 (custom) cpe:2.3:a:johnson_controls:t2000::::::::

Date Public

2026-08-25 14:32

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-64896",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-27T19:31:28.626751Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-284",
                "description": "CWE-284 Improper Access Control",
                "lang": "en",
                "type": "CWE"
              },
              {
                "cweId": "CWE-732",
                "description": "CWE-732 Incorrect Permission Assignment for Critical Resource",
                "lang": "en",
                "type": "CWE"
              }
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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          "product": "T2000",
          "vendor": "Johnson Controls",
          "versions": [
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              "status": "affected",
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      "metrics": [
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          "cvssV4_0": {
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            "Recovery": "NOT_DEFINED",
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            "attackRequirements": "NONE",
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            "baseScore": 5.2,
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            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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        "dateUpdated": "2026-08-27T14:42:33.253Z",
        "orgId": "7281d04a-a537-43df-bfb4-fa4110af9d01",
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        {
          "url": "https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
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              "value": "\u003cdiv\u003e\u003cp\u003eIf immediate update is not possible, Johnson Controls recommends the following mitigations:\u0026nbsp;\u003c/p\u003e\u003c/div\u003e\u003cdiv\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eRestrict physical access to the device by installing it in a secured equipment room that limits access to authorized service personnel only.\u0026nbsp;\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003cdiv\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eImplement tamper-evident seals on device housings and panel enclosures to detect and deter unauthorized physical access attempts.\u0026nbsp;\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003cdiv\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eConduct periodic physical inspections of device installations to identify signs of tampering, unauthorized cable connections, or enclosure breaches.\u0026nbsp;\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003cdiv\u003e\u003cp\u003eAdditional best-practice mitigations that end users can apply as a layer of defense:\u0026nbsp;\u003c/p\u003e\u003c/div\u003e\u003cdiv\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003ePhysically secure\u0026nbsp;the device\u0026nbsp;enclosure to prevent unauthorized access to internal circuit boards and ports.\u0026nbsp;\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003cdiv\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eImplement authentication mechanisms on any accessible debug interfaces to restrict access to authorized service personnel only.\u0026nbsp;\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003cdiv\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eMonitor physical access to device installations and implement tamper detection where possible.\u0026nbsp;\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003cdiv\u003e\u003cul\u003e\u003cli\u003e\u003cp\u003eFollow the recommendations in the Johnson Controls Product Hardening Guide available at\u0026nbsp;\u003ca href=\"https://www.johnsoncontrols.com/trust-center/cybersecurity/resources\" target=\"_blank\" rel=\"noreferrer noopener\"\u003ehttps://www.johnsoncontrols.com/trust-center/cybersecurity/resources\u003c/a\u003e.\u0026nbsp;\u003c/p\u003e\u003c/li\u003e\u003c/ul\u003e\u003c/div\u003e\u003cdiv\u003e\u003cp\u003eThese mitigations reduce risk but may not fully remediate the vulnerability.\u0026nbsp;\u0026nbsp;\u003c/p\u003e\u003c/div\u003e"
            }
          ],
          "value": "If immediate update is not possible, Johnson Controls recommends the following mitigations:\u00a0\n\n\n\n  *  \n\nRestrict physical access to the device by installing it in a secured equipment room that limits access to authorized service personnel only.\u00a0\n\n\n\n\n\n\n  *  \n\nImplement tamper-evident seals on device housings and panel enclosures to detect and deter unauthorized physical access attempts.\u00a0\n\n\n\n\n\n\n  *  \n\nConduct periodic physical inspections of device installations to identify signs of tampering, unauthorized cable connections, or enclosure breaches.\u00a0\n\n\n\n\n\n\n\n\nAdditional best-practice mitigations that end users can apply as a layer of defense:\u00a0\n\n\n\n  *  \n\nPhysically secure\u00a0the device\u00a0enclosure to prevent unauthorized access to internal circuit boards and ports.\u00a0\n\n\n\n\n\n\n  *  \n\nImplement authentication mechanisms on any accessible debug interfaces to restrict access to authorized service personnel only.\u00a0\n\n\n\n\n\n\n  *  \n\nMonitor physical access to device installations and implement tamper detection where possible.\u00a0\n\n\n\n\n\n\n  *  \n\nFollow the recommendations in the Johnson Controls Product Hardening Guide available at\u00a0 https://www.johnsoncontrols.com/trust-center/cybersecurity/resources .\u00a0\n\n\n\n\n\n\n\n\nThese mitigations reduce risk but may not fully remediate the vulnerability."
        }
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    "assignerShortName": "jci",
    "cveId": "CVE-2026-64896",
    "datePublished": "2026-08-27T14:42:33.253Z",
    "dateReserved": "2026-07-20T19:51:19.089Z",
    "dateUpdated": "2026-08-27T19:31:48.139Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64896\",\"sourceIdentifier\":\"productsecurity@jci.com\",\"published\":\"2026-08-27T17:19:23.820\",\"lastModified\":\"2026-08-27T20:18:20.347\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Debug and Test Interface With Improper Access Control vulnerability in Johnson Controls T2000 allows Accessing Functionality Not Properly Constrained by ACLs.\\n\\nThis issue affects T2000: before 31.6.\"}],\"affected\":[{\"source\":\"productsecurity@jci.com\",\"affectedData\":[{\"vendor\":\"Johnson Controls\",\"product\":\"T2000\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"31.6\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"productsecurity@jci.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":5.2,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"PHYSICAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"LOW\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-08-27T19:31:28.626751Z\",\"id\":\"CVE-2026-64896\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-284\"},{\"lang\":\"en\",\"value\":\"CWE-732\"}]}],\"references\":[{\"url\":\"https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories\",\"source\":\"productsecurity@jci.com\"}]}}"
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}

FKIE_CVE-2026-64896

Vulnerability from fkie_nvd - Published: 2026-08-27 17:19 - Updated: 2026-08-27 17:19

Severity

5.2 (Medium) - CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

Summary

Debug and Test Interface With Improper Access Control vulnerability in Johnson Controls T2000 allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects T2000: before 31.6.

References

	URL	Tags
	productsecurity@jci.com	https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "T2000",
          "vendor": "Johnson Controls",
          "versions": [
            {
              "lessThan": "31.6",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "productsecurity@jci.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Debug and Test Interface With Improper Access Control vulnerability in Johnson Controls T2000 allows Accessing Functionality Not Properly Constrained by ACLs.\n\nThis issue affects T2000: before 31.6."
    }
  ],
  "id": "CVE-2026-64896",
  "lastModified": "2026-08-27T17:19:23.820",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "PHYSICAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.2,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "productsecurity@jci.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-27T17:19:23.820",
  "references": [
    {
      "source": "productsecurity@jci.com",
      "url": "https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories"
    }
  ],
  "sourceIdentifier": "productsecurity@jci.com",
  "vulnStatus": "Received"
}

GHSA-H5WR-2PX2-58V4

Vulnerability from github – Published: 2026-08-27 18:32 – Updated: 2026-08-27 18:32

Details

Debug and Test Interface With Improper Access Control vulnerability in Johnson Controls T2000 allows Accessing Functionality Not Properly Constrained by ACLs.

This issue affects T2000: before 31.6.

Severity

5.2 (Medium)


                  
                    CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-64896"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-27T17:19:23Z",
    "severity": "MODERATE"
  },
  "details": "Debug and Test Interface With Improper Access Control vulnerability in Johnson Controls T2000 allows Accessing Functionality Not Properly Constrained by ACLs.\n\nThis issue affects T2000: before 31.6.",
  "id": "GHSA-h5wr-2px2-58v4",
  "modified": "2026-08-27T18:32:23Z",
  "published": "2026-08-27T18:32:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64896"
    },
    {
      "type": "WEB",
      "url": "https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-64896 (GCVE-0-2026-64896)

FKIE_CVE-2026-64896

GHSA-H5WR-2PX2-58V4

Tags

Sightings

Nomenclature