CVE-2026-25532

{"id": "CVE-2026-25532", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 2.1}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.0, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.1}]}, "published": "2026-02-04T18:16:09.747", "references": [{"url": "https://github.com/espressif/esp-idf/commit/60f992a26de17bb5406f2149a2f8282dd7ad1c59", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/6f6766f917bc940ffbcc97eac4765a6ab15d5f79", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/73a587d42a57ece1962b6a4c530b574600650f63", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/b209fae993d795255827ce6b2b0d6942a377f5d4", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/b88befde6b5addcdd8d7373ce55c8052dea1e855", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/cad36beb4cde27abcf316cd90d8d8dddbc6f213a", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/commit/de28801e8ea6a736b6f0db6fc0c682739363bb41", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-m2h2-683f-9mw7", "tags": ["Third Party Advisory", "Patch"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-191"}]}], "descriptions": [{"lang": "en", "value": "ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, a vulnerability exists in the WPS (Wi-Fi Protected Setup) Enrollee implementation where malformed EAP-WSC packets with truncated payloads can cause integer underflow during fragment length calculation. When processing EAP-Expanded (WSC) messages, the code computes frag_len by subtracting header sizes from the total packet length. If an attacker sends a packet where the EAP Length field covers only the header and flags but omits the expected payload (such as the 2-byte Message Length field when WPS_MSG_FLAG_LEN is set), frag_len becomes negative. This negative value is then implicitly cast to size_t when passed to wpabuf_put_data(), resulting in a very large unsigned value. This issue has been patched in versions 5.5.3, 5.4.4, 5.3.5, 5.2.7, and 5.1.7."}, {"lang": "es", "value": "ESF-IDF es el Framework de Desarrollo de Internet de las Cosas (IoT) de Espressif. 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."}], "lastModified": "2026-02-20T17:13:48.680", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:espressif:esp-idf:5.1.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "90D991F0-A03E-44CF-9187-75897399797A"}, {"criteria": "cpe:2.3:a:espressif:esp-idf:5.2.6:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "37A040C2-E9D4-4678-9A10-74B5AEE4901D"}, {"criteria": "cpe:2.3:a:espressif:esp-idf:5.3.4:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AA4D9168-C8C1-4B1A-81C3-D4888DB36CAE"}, {"criteria": "cpe:2.3:a:espressif:esp-idf:5.4.3:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7CA4F443-03D3-4B10-909E-A813F72BC08C"}, {"criteria": "cpe:2.3:a:espressif:esp-idf:5.5.2:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "43489143-3F90-42E6-B75F-78CBEAD09C4D"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}