{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2025-27840",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Espressif ESP32 chips allow 29 hidden HCI commands, such as 0xFC02 (Write memory)."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf",
                "refsource": "MISC",
                "name": "https://github.com/TarlogicSecurity/Talks/blob/main/2025_RootedCon_BluetoothTools.pdf"
            },
            {
                "url": "https://x.com/pascal_gujer/status/1898442439704158276",
                "refsource": "MISC",
                "name": "https://x.com/pascal_gujer/status/1898442439704158276"
            },
            {
                "url": "https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/",
                "refsource": "MISC",
                "name": "https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/"
            },
            {
                "url": "https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/",
                "refsource": "MISC",
                "name": "https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/"
            },
            {
                "url": "https://reg.rootedcon.com/cfp/schedule/talk/5",
                "refsource": "MISC",
                "name": "https://reg.rootedcon.com/cfp/schedule/talk/5"
            },
            {
                "refsource": "MISC",
                "name": "https://flyingpenguin.com/?p=67838",
                "url": "https://flyingpenguin.com/?p=67838"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/em0gi/CVE-2025-27840",
                "url": "https://github.com/em0gi/CVE-2025-27840"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/orgs/espruino/discussions/7699",
                "url": "https://github.com/orgs/espruino/discussions/7699"
            },
            {
                "refsource": "MISC",
                "name": "https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/",
                "url": "https://www.bleepingcomputer.com/news/security/undocumented-commands-found-in-bluetooth-chip-used-by-a-billion-devices/"
            },
            {
                "refsource": "MISC",
                "name": "https://darkmentor.com/blog/esp32_non-backdoor/",
                "url": "https://darkmentor.com/blog/esp32_non-backdoor/"
            },
            {
                "refsource": "MISC",
                "name": "https://news.ycombinator.com/item?id=43308740",
                "url": "https://news.ycombinator.com/item?id=43308740"
            },
            {
                "refsource": "MISC",
                "name": "https://news.ycombinator.com/item?id=43301369",
                "url": "https://news.ycombinator.com/item?id=43301369"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/esphome/esphome/discussions/8382",
                "url": "https://github.com/esphome/esphome/discussions/8382"
            },
            {
                "refsource": "MISC",
                "name": "https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html",
                "url": "https://cheriot.org/auditing/backdoor/2025/03/09/no-esp32-style-backdoor.html"
            },
            {
                "refsource": "MISC",
                "name": "https://www.espressif.com/en/news/Response_ESP32_Bluetooth",
                "url": "https://www.espressif.com/en/news/Response_ESP32_Bluetooth"
            }
        ]
    }
}