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En las versiones 5.5.2, 5.4.3, 5.3.4, 5.2.6 y 5.1.6, existe una vulnerabilidad en la implementaci\u00f3n de Enrollee de WPS (Wi-Fi Protected Setup) donde paquetes EAP-WSC malformados con cargas \u00fatiles truncadas pueden causar un desbordamiento negativo de enteros (integer underflow) durante el c\u00e1lculo de la longitud del fragmento. Al procesar mensajes EAP-Expanded (WSC), el c\u00f3digo calcula frag_len restando los tama\u00f1os de las cabeceras de la longitud total del paquete. Si un atacante env\u00eda un paquete donde el campo EAP Length cubre solo la cabecera y las banderas (flags) pero omite la carga \u00fatil esperada (como el campo Message Length de 2 bytes cuando WPS_MSG_FLAG_LEN est\u00e1 configurado), frag_len se vuelve negativo. Este valor negativo se convierte impl\u00edcitamente a size_t cuando se pasa a wpabuf_put_data(), lo que resulta en un valor sin signo muy grande. Este problema ha sido parcheado en las versiones 5.5.3, 5.4.4, 5.3.5, 5.2.7 y 5.1.7."}], "id": "CVE-2026-25532", "lastModified": "2026-02-20T17:13:48.680", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-02-04T18:16:09.747", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/60f992a26de17bb5406f2149a2f8282dd7ad1c59"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/6f6766f917bc940ffbcc97eac4765a6ab15d5f79"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/73a587d42a57ece1962b6a4c530b574600650f63"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/b209fae993d795255827ce6b2b0d6942a377f5d4"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/b88befde6b5addcdd8d7373ce55c8052dea1e855"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/cad36beb4cde27abcf316cd90d8d8dddbc6f213a"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/espressif/esp-idf/commit/de28801e8ea6a736b6f0db6fc0c682739363bb41"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory", "Patch"], "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-m2h2-683f-9mw7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-191"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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{"created": "2026-02-05T11:40:01.116499+00:00", "updated": "2026-02-05T11:40:01.116533+00:00", "vendors": ["espressif", "espressif$PRODUCT$esp-idf"]}