CVE-2026-66086

{"id": "CVE-2026-66086", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-66086", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T18:01:14.326188Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@unisoc.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security@unisoc.com", "affectedData": [{"vendor": "Unisoc (Shanghai) Technologies Co., Ltd.", "product": "Modem", "versions": [{"status": "affected", "version": "T8100"}, {"status": "affected", "version": "T9100"}, {"status": "affected", "version": "UDX710"}], "defaultStatus": "unaffected"}]}], "published": "2026-10-12T02:16:57.600", "references": [{"url": "https://www.unisoc.com/en/support/product-security-bulletin/2109454821805424641", "source": "security@unisoc.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security@unisoc.com", "description": [{"lang": "en", "value": "CWE-121"}]}], "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."}], "lastModified": "2026-10-16T19:55:59.740", "sourceIdentifier": "security@unisoc.com"}