{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-28766", "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "state": "PUBLISHED", "assignerShortName": "icscert", "dateReserved": "2026-03-17T20:12:55.120Z", "datePublished": "2026-04-03T20:20:57.302Z", "dateUpdated": "2026-04-03T20:20:57.302Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert", "dateUpdated": "2026-04-03T20:20:57.302Z"}, "title": "Gardyn Cloud API Missing Authentication for Critical Function", "datePublic": "2026-04-02T17:06:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-306", "description": "CWE-306", "type": "CWE"}]}], "affected": [{"vendor": "Gardyn", "product": "Cloud API", "versions": [{"status": "affected", "version": "0", "lessThan": "2.12.2026", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication."}]}], "references": [{"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-03"}, {"url": "https://mygardyn.com/security/"}, {"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-055-03.json"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.2, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseSeverity": "CRITICAL", "baseScore": 9.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N"}}], "solutions": [{"lang": "en", "value": "Gardyn states that the relevant fixes are included in the latest version of the Gardyn mobile application. Users are required to run a supported version of the Gardyn App on their phone in order to access Gardyn services and devices.\n\n\n\nThe current versions of the Gardyn App and the Gardyn Home firmware can be checked in the Gardyn App.\n\n\n\nFor all vulnerabilities, Gardyn recommends users ensure their home kit and studio devices are upgraded to firmware master.622 or later. Gardyn also recommends that users update their mobile application to the most recent version. Gardyn requests that users ensure their devices have network connectivity in order to automatically download needed firmware updates. Unconnected devices will automatically update when configured with a working Internet connection.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Gardyn states that the relevant fixes are included in the latest version of the Gardyn mobile application. Users are required to run a supported version of the Gardyn App on their phone in order to access Gardyn services and devices.\n<br>\n<br>The current versions of the Gardyn App and the Gardyn Home firmware can be checked in the Gardyn App.\n<br>\n<br>For all vulnerabilities, Gardyn recommends users ensure their home kit and studio devices are upgraded to firmware master.622 or later. Gardyn also recommends that users update their mobile application to the most recent version. Gardyn requests that users ensure their devices have network connectivity in order to automatically download needed firmware updates. Unconnected devices will automatically update when configured with a working Internet connection."}]}], "credits": [{"lang": "en", "value": "Michael Groberman reported these vulnerabilities to CISA.", "type": "finder"}], "source": {"advisory": "ICSA-26-055-03", "discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.1"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication."}], "id": "CVE-2026-28766", "lastModified": "2026-04-03T21:17:10.387", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.2, "baseSeverity": "CRITICAL", "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": "HIGH", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/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": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}]}, "published": "2026-04-03T21:17:10.387", "references": [{"source": "ics-cert@hq.dhs.gov", "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-055-03.json"}, {"source": "ics-cert@hq.dhs.gov", "url": "https://mygardyn.com/security/"}, {"source": "ics-cert@hq.dhs.gov", "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-03"}], "sourceIdentifier": "ics-cert@hq.dhs.gov", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "ics-cert@hq.dhs.gov", "type": "Primary"}]}

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