{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-66086", "assignerOrgId": "63f92e9c-2193-4c24-98a9-93640392c3d3", "state": "PUBLISHED", "assignerShortName": "Unisoc", "dateReserved": "2026-07-24T02:05:12.603Z", "datePublished": "2026-10-12T01:28:35.334Z", "dateUpdated": "2026-10-12T01:28:35.334Z"}, "containers": {"cna": {"affected": [{"vendor": "Unisoc (Shanghai) Technologies Co., Ltd.", "product": "Modem", "versions": [{"version": "T8100", "status": "affected"}, {"version": "T9100", "status": "affected"}, {"version": "UDX710", "status": "affected"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "In the modem OTA stack, there is a possible stack-based buffer overflow due to improper validation of scheduling information in SIB1 messages. This could lead to remote code execution or denial of service with no additional execution privileges needed."}], "references": [{"url": "https://www.unisoc.com/en/support/product-security-bulletin/2109454821805424641"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.3, "baseSeverity": "HIGH"}}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-121", "cweId": "CWE-121", "type": "CWE"}]}], "title": "Stack-based Buffer Overflow in Modem", "providerMetadata": {"orgId": "63f92e9c-2193-4c24-98a9-93640392c3d3", "shortName": "Unisoc", "dateUpdated": "2026-10-12T01:28:35.334Z"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Modem", "vendor": "Unisoc (Shanghai) Technologies Co., Ltd.", "versions": [{"status": "affected", "version": "T8100"}, {"status": "affected", "version": "T9100"}, {"status": "affected", "version": "UDX710"}]}], "source": "security@unisoc.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the modem OTA stack, there is a possible stack-based buffer overflow due to improper validation of scheduling information in SIB1 messages. This could lead to remote code execution or denial of service with no additional execution privileges needed."}], "id": "CVE-2026-66086", "lastModified": "2026-10-12T02:16:57.600", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security@unisoc.com", "type": "Secondary"}]}, "published": "2026-10-12T02:16:57.600", "references": [{"source": "security@unisoc.com", "url": "https://www.unisoc.com/en/support/product-security-bulletin/2109454821805424641"}], "sourceIdentifier": "security@unisoc.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "security@unisoc.com", "type": "Primary"}]}

{}

{"created": "2026-10-12T03:30:04.794781+00:00", "updated": "2026-10-12T03:30:04.794791+00:00", "vendors": []}