{"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":"2026-10-15T18:08:53.064Z"},"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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T18:01:14.326188Z","id":"CVE-2026-66086","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-15T18:08:53.064Z"}}]}}