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    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-21427",
        "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "state": "PUBLISHED",
        "assignerShortName": "jpcert",
        "dateReserved": "2025-12-25T00:23:40.578Z",
        "datePublished": "2026-01-08T04:12:21.781Z",
        "dateUpdated": "2026-01-22T07:03:11.927Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "USB DAC Amplifier APS-DA101JS",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "USB DAC Amplifier APS-DA101JR",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "USB DAC Amplifier APS-DA101JGL",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "USB DAC Amplifier APS-DA101JGR",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "Stellanova Lite APS-S201JS",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "Stellanova Lite APS-S201JR",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "Stellanova Lite APS-S201JGL",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "Stellanova Lite APS-S201JGR",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "Stellanova Limited APS-S202J-LM",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                },
                {
                    "vendor": "PIONEER CORPORATION",
                    "product": "Stellanova APS-S301 series",
                    "versions": [
                        {
                            "version": "all versions",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "The installers for multiple products provided by PIONEER CORPORATION contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries. As a result,  arbitrary code may be executed with the privileges of the running installer."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "description": "Uncontrolled Search Path Element",
                            "lang": "en-US",
                            "cweId": "CWE-427",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://jpn.pioneer/ja/support/software/stellanova/dac_driver/"
                },
                {
                    "url": "https://jvn.jp/en/jp/JVN17956874/"
                }
            ],
            "tags": [
                "unsupported-when-assigned"
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en-US",
                            "value": "GENERAL"
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                    ],
                    "cvssV3_0": {
                        "version": "3.0",
                        "baseSeverity": "HIGH",
                        "baseScore": 7.8,
                        "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
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                    "cvssV4_0": {
                        "version": "4.0",
                        "baseSeverity": "HIGH",
                        "baseScore": 8.5,
                        "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
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            ],
            "providerMetadata": {
                "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
                "shortName": "jpcert",
                "dateUpdated": "2026-01-22T07:03:11.927Z"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-01-08T15:52:49.936381Z",
                                "id": "CVE-2026-21427",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
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                                        "Technical Impact": "total"
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                "title": "CISA ADP Vulnrichment",
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