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"cveId": "CVE-2026-64896",
"assignerOrgId": "7281d04a-a537-43df-bfb4-fa4110af9d01",
"state": "PUBLISHED",
"assignerShortName": "jci",
"dateReserved": "2026-07-20T19:51:19.089Z",
"datePublished": "2026-08-27T14:42:33.253Z",
"dateUpdated": "2026-08-27T19:31:48.139Z"
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"title": "T2000 open debug port",
"datePublic": "2026-08-25T14:32:00.000Z",
"problemTypes": [
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"lang": "en",
"description": "Debug and Test Interface With Improper Access Control"
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"value": "Accessing Functionality Not Properly Constrained by ACLs"
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"vendor": "Johnson Controls",
"product": "T2000",
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"vulnConfidentialityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"subIntegrityImpact": "NONE",
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"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
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"value": "If immediate update is not possible, Johnson Controls recommends the following mitigations: \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. \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. \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. \n\n\n\n\n\n\n\n\nAdditional best-practice mitigations that end users can apply as a layer of defense: \n\n\n\n * \n\nPhysically secure the device enclosure to prevent unauthorized access to internal circuit boards and ports. \n\n\n\n\n\n\n * \n\nImplement authentication mechanisms on any accessible debug interfaces to restrict access to authorized service personnel only. \n\n\n\n\n\n\n * \n\nMonitor physical access to device installations and implement tamper detection where possible. \n\n\n\n\n\n\n * \n\nFollow the recommendations in the Johnson Controls Product Hardening Guide available at  https://www.johnsoncontrols.com/trust-center/cybersecurity/resources . \n\n\n\n\n\n\n\n\nThese mitigations reduce risk but may not fully remediate the vulnerability.",
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"value": "<div><p>If immediate update is not possible, Johnson Controls recommends the following mitigations:&nbsp;</p></div><div><ul><li><p>Restrict physical access to the device by installing it in a secured equipment room that limits access to authorized service personnel only.&nbsp;</p></li></ul></div><div><ul><li><p>Implement tamper-evident seals on device housings and panel enclosures to detect and deter unauthorized physical access attempts.&nbsp;</p></li></ul></div><div><ul><li><p>Conduct periodic physical inspections of device installations to identify signs of tampering, unauthorized cable connections, or enclosure breaches.&nbsp;</p></li></ul></div><div><p>Additional best-practice mitigations that end users can apply as a layer of defense:&nbsp;</p></div><div><ul><li><p>Physically secure&nbsp;the device&nbsp;enclosure to prevent unauthorized access to internal circuit boards and ports.&nbsp;</p></li></ul></div><div><ul><li><p>Implement authentication mechanisms on any accessible debug interfaces to restrict access to authorized service personnel only.&nbsp;</p></li></ul></div><div><ul><li><p>Monitor physical access to device installations and implement tamper detection where possible.&nbsp;</p></li></ul></div><div><ul><li><p>Follow the recommendations in the Johnson Controls Product Hardening Guide available at&nbsp;<a href=\"https://www.johnsoncontrols.com/trust-center/cybersecurity/resources\" target=\"_blank\" rel=\"noreferrer noopener\">https://www.johnsoncontrols.com/trust-center/cybersecurity/resources</a>.&nbsp;</p></li></ul></div><div><p>These mitigations reduce risk but may not fully remediate the vulnerability.&nbsp;&nbsp;</p></div>"
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"timestamp": "2026-08-27T19:31:28.626751Z",
"id": "CVE-2026-64896",
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"title": "CISA ADP Vulnrichment",
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