{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-45542",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-05-12T17:48:47.879Z",
        "datePublished": "2026-06-10T00:34:53.238Z",
        "dateUpdated": "2026-06-10T15:16:16.137Z"
    },
    "containers": {
        "cna": {
            "title": "ESF-IDF: Heap buffer overflow in protocomm Security2 over Bluetooth",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-122",
                            "lang": "en",
                            "description": "CWE-122: Heap-based Buffer Overflow",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "ADJACENT_NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.1,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4f",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4f"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cf",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cf"
                },
                {
                    "name": "https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103"
                }
            ],
            "affected": [
                {
                    "vendor": "espressif",
                    "product": "esp-idf",
                    "versions": [
                        {
                            "version": "= 5.2.6",
                            "status": "affected"
                        },
                        {
                            "version": "= 5.3.5",
                            "status": "affected"
                        },
                        {
                            "version": "= 5.4.4",
                            "status": "affected"
                        },
                        {
                            "version": "= 5.5.4",
                            "status": "affected"
                        },
                        {
                            "version": "= 6.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-06-10T00:34:53.238Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a heap buffer overflow exists in the Security Scheme 2 (SRP6a) session-setup path of the protocomm component. The first-phase handler (handle_session_command0() in components/protocomm/src/security/security2.c) trusts the length of a client-supplied protobuf field for the SRP6a username and copies it into a buffer whose size is derived from a narrower destination type. The resulting truncation-versus-copy asymmetry corrupts the heap when an oversized value is supplied. This issue has been patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.5, and 6.0.1."
                }
            ],
            "source": {
                "advisory": "GHSA-9r76-858f-v6jh",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-10T15:16:06.919477Z",
                                "id": "CVE-2026-45542",
                                "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": "2026-06-10T15:16:16.137Z"
                }
            }
        ]
    }
}