CVE-2026-45542

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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."}, {"lang": "es", "value": "ESF-IDF es el Framework de Desarrollo de Internet de las Cosas (IoT) de Espressif. En las versiones 5.2.6, 5.3.5, 5.4.4, 5.5.4 y 6.0, existe un desbordamiento de b\u00fafer de pila en la ruta de configuraci\u00f3n de sesi\u00f3n del Esquema de Seguridad 2 (SRP6a) del componente protocomm. El gestor de primera fase (handle_session_command0() en components/protocomm/src/security/security2.c) conf\u00eda en la longitud de un campo protobuf proporcionado por el cliente para el nombre de usuario SRP6a y lo copia en un b\u00fafer cuyo tama\u00f1o se deriva de un tipo de destino m\u00e1s estrecho. La asimetr\u00eda resultante de truncamiento versus copia corrompe la pila cuando se suministra un valor sobredimensionado. Este problema ha sido parcheado en las versiones 5.2.7, 5.3.6, 5.4.5, 5.5.5 y 6.0.1."}], "id": "CVE-2026-45542", "lastModified": "2026-07-23T09:10:00.113", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45542", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-10T15:16:06.919477Z", "version": "2.0.3"}}]}, "published": "2026-06-10T02:16:33.103", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4f"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cf"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103"}, {"source": "security-advisories@github.com", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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