{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-81507",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-26T20:58:58.083Z",
        "datePublished": "2026-10-13T15:12:01.010Z",
        "dateUpdated": "2026-10-14T15:00:34.785Z"
    },
    "containers": {
        "cna": {
            "title": "ESF-IDF: Bluetooth Classic L2CAP Heap Memory Disclosure Allowing Unauthorized Access to Sensitive Data",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-125",
                            "lang": "en",
                            "description": "CWE-125: Out-of-bounds Read",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "ADJACENT_NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/espressif/esp-idf/security/advisories/GHSA-v335-fxwc-rc44",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-v335-fxwc-rc44"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/14c99559b4337cabcf0f09c21d16b93c4cd7a6fe",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/14c99559b4337cabcf0f09c21d16b93c4cd7a6fe"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/1e07f6d83ca892630a7210df2958455f7ca77b4a",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/1e07f6d83ca892630a7210df2958455f7ca77b4a"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/5731c63ece128f156939b9f734256e2227c1442a",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/5731c63ece128f156939b9f734256e2227c1442a"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/8de265dc44b1b22c749ea44ee7c609b3da4162f0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/8de265dc44b1b22c749ea44ee7c609b3da4162f0"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/9a6d04f65e0e341e7d72bd417c9f31b8a04ce846",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/9a6d04f65e0e341e7d72bd417c9f31b8a04ce846"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/c2610255a5adce651ca582bb82368c3dd0ee2834",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/c2610255a5adce651ca582bb82368c3dd0ee2834"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/c8cd8f4f3019ae2f912c8cbe9974445e8d9b8749",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/c8cd8f4f3019ae2f912c8cbe9974445e8d9b8749"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/releases/tag/v5.2.8",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/releases/tag/v5.2.8"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/releases/tag/v5.3.6",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/releases/tag/v5.3.6"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/releases/tag/v5.5.5",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/releases/tag/v5.5.5"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/releases/tag/v6.0.3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/releases/tag/v6.0.3"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/releases/tag/v6.1-rc1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/releases/tag/v6.1-rc1"
                }
            ],
            "affected": [
                {
                    "vendor": "espressif",
                    "product": "esp-idf",
                    "versions": [
                        {
                            "version": "< 5.2.8",
                            "status": "affected"
                        },
                        {
                            "version": ">= 5.3-beta1, < 5.3.6",
                            "status": "affected"
                        },
                        {
                            "version": ">= 5.4-beta1, < 5.5.5",
                            "status": "affected"
                        },
                        {
                            "version": ">= 6.0-beta1, < 6.0.3",
                            "status": "affected"
                        },
                        {
                            "version": ">= 6.1-beta1, < 6.1-rc1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-13T15:12:01.010Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. Prior to 5.2.8, 5.3.6, 5.5.5, 6.0.3, and 6.1-rc1, ESP-IDF BlueDroid L2CAP configuration-option processing in l2c_main.c and l2c_utils.c does not consistently validate option lengths against the remaining received packet bytes. A remote unauthenticated BR/EDR peer within radio range can send a malformed L2CAP configuration request that causes an out-of-bounds read, and under some runtime conditions limited adjacent Bluetooth stack memory can be included in an outbound L2CAP Configuration Response. The issue affects ESP32-class products using the BlueDroid host stack with Classic Bluetooth enabled. This issue is fixed in 5.2.8, 5.3.6, 5.5.5, 6.0.3, and 6.1-rc1."
                }
            ],
            "source": {
                "advisory": "GHSA-v335-fxwc-rc44",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-14T15:00:21.832346Z",
                                "id": "CVE-2026-81507",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-14T15:00:34.785Z"
                }
            }
        ]
    }
}