CVE-2026-35717

{"id": "CVE-2026-35717", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-35717", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-03T13:42:53.968052Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}]}], "published": "2026-06-02T14:16:51.123", "references": [{"url": "https://github.com/xchg-rax-rax/vulnerability-research/tree/main/CVE-2026-35717", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-121"}]}], "descriptions": [{"lang": "en", "value": "A stack-based buffer overflow in the export_language.cgi binary in VIVOTEK FD8136 firmware FD8136-VVTK-0300a allows authenticated remote attackers to execute arbitrary code as root via a crafted POST request to the /cgi-bin/admin/export_language.cgi endpoint. The handler passes the attacker-controlled Content-Length value directly to fread() as the read size into a fixed-size 0x60-byte stack buffer, overwriting the saved link register. The binary is compiled without stack canaries."}, {"lang": "es", "value": "Un desbordamiento de b\u00fafer basado en pila en el binario export_language.cgi en el firmware VIVOTEK FD8136 FD8136-VVTK-0300a permite a atacantes remotos autenticados ejecutar c\u00f3digo arbitrario como root a trav\u00e9s de una solicitud POST manipulada al endpoint /cgi-bin/admin/export_language.cgi. El gestor pasa el valor Content-Length controlado por el atacante directamente a fread() como el tama\u00f1o de lectura en un b\u00fafer de pila de tama\u00f1o fijo de 0x60 bytes, sobrescribiendo el registro de enlace guardado. El binario se compila sin canarios de pila."}], "lastModified": "2026-07-22T19:10:00.120", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:vivotek:fd8136_firmware:0300a:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E3E87285-9E56-4692-A236-C3A3E277AA03"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:vivotek:fd8136:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "23008BB5-E0BD-482E-BB65-419C009847A8"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}