{"schema":"threatline.record/2","record":{"id":"CVE-2026-66086","aliases":[],"summary":"Stack-based Buffer Overflow in Modem","details":"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.","categories":["Unclassified"],"product":"Modem","vendor":"Unisoc (Shanghai) Technologies Co., Ltd.","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-66086","source_modified_at":"2026-10-15T18:08:53.064Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Modem","vendor":"Unisoc (Shanghai) Technologies Co., Ltd.","versions":[{"version":"T8100","status":"affected"},{"version":"T9100","status":"affected"},{"version":"UDX710","status":"affected"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.3,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00455,"percentile":0.38561,"score_date":"2026-10-23"},"published_at":"2026-10-12T01:28:35.334Z","modified_at":"2026-10-15T18:08:53.064Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-66086","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T18:08:53.064Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-66086","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.unisoc.com/en/support/product-security-bulletin/2109454821805424641"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-15T18:01:14.326188Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-15T18:08:53.064Z","content_hash":"ce7e87931f978ff1523611e4b128ef48c643637ed97b7b0c15bf01ec4af77523"}}