CVE-2026-42476

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:opencascade:open_cascade_technology:*:*:*:*:*:*:*:*", "matchCriteriaId": "13B8FE30-EAE8-4F3E-8F5C-E81BD438FF6C", "versionEndIncluding": "7.9.3", "vulnerable": true}, {"criteria": "cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:beta1:*:*:*:*:*:*", "matchCriteriaId": "0B51DDC9-FDA5-4701-8CA3-5B589D72FA88", "vulnerable": true}, {"criteria": "cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "57733587-FB01-4201-8509-E81B6AE94AE3", "vulnerable": true}, {"criteria": "cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "86CF4B98-CCD3-4463-9A24-231128DDF85A", "vulnerable": true}, {"criteria": "cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F3987B9C-2448-4281-9A5C-FB6AF0336C3B", "vulnerable": true}, {"criteria": "cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "632D1594-AD1F-4F80-86F7-F8850F3574EC", "vulnerable": true}, {"criteria": "cpe:2.3:a:opencascade:open_cascade_technology:8.0.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "267468E1-F54F-44AF-B74F-DFD29354243B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Two heap-based out-of-bounds read vulnerabilities in the STL ASCII file parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 exist in RWStl_Reader::ReadAscii because buffers returned by Standard_ReadLineBuffer::ReadLine() are not properly length-validated before strncasecmp or direct byte access. User-assisted attackers can trigger these issues by persuading a victim to open a crafted STL file with extremely short lines, resulting in a denial of service or possible information disclosure."}, {"lang": "es", "value": "Dos vulnerabilidades de lectura fuera de l\u00edmites basadas en el heap en el analizador de archivos ASCII STL en Open CASCADE Technology (OCCT) V8_0_0_rc5 existen en RWStl_Reader::ReadAscii porque los b\u00faferes devueltos por Standard_ReadLineBuffer::ReadLine() no se validan correctamente en cuanto a su longitud antes de strncasecmp o el acceso directo a bytes. Atacantes asistidos por el usuario pueden desencadenar estos problemas al persuadir a una v\u00edctima para que abra un archivo STL manipulado con l\u00edneas extremadamente cortas, lo que resulta en una denegaci\u00f3n de servicio o posible revelaci\u00f3n de informaci\u00f3n."}], "id": "CVE-2026-42476", "lastModified": "2026-11-11T23:10:00.263", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42476", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-01T18:32:36.964961Z", "version": "2.0.3"}}]}, "published": "2026-05-01T15:16:43.620", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-125"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "8.0.0-rc5"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "open_cascade_technology", "vendor": "opencascade"}], "created": "2026-05-02T08:15:16.311658+00:00", "title": "Heap OOB Read in Open CASCADE STL ASCII Parser Causes DoS and Info Disclosure", "updated": "2026-05-04T19:44:59.700375+00:00", "vendors": ["opencascade", "opencascade$PRODUCT$open_cascade_technology"]}