{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-3966",
        "ASSIGNER": "vulnerabilities@zephyrproject.org",
        "DATE_PUBLIC": "2022-02-16T00:00:00.000Z",
        "STATE": "PUBLIC",
        "TITLE": "Usb bluetooth device ACL read cb buffer overflow"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "zephyrproject-rtos",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "zephyr",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<=",
                                            "version_value": "v3.0"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "usb device bluetooth class includes a buffer overflow related to implementation of net_buf_add_mem."
            }
        ]
    },
    "impact": {
        "cvss": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H",
            "attackVector": "Adjacent",
            "attackComplexity": "LOW",
            "privilegesRequired": "NONE",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "availabilityImpact": "HIGH",
            "baseSeverity": "CRITICAL"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Heap-based Buffer Overflow (CWE-122)"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hfxq-3w6x-fv2m",
                "refsource": "MISC",
                "name": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hfxq-3w6x-fv2m"
            }
        ]
    },
    "source": {
        "defect": [
            "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hfxq-3w6x-fv2m"
        ]
    }
}