{"id":"CVE-2026-66086","title":"In the modem OTA stack, there is a possible stack-based buffer overflow due to improper validation of scheduling information in SIB1 messages","summary":"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 pri…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-121"],"vendor":"Unisoc (Shanghai) Technologies Co., Ltd.","product":"Modem","affected":["Modem T8100","Modem T9100","Modem UDX710"],"published":"2026-10-12","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:55:59.740","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-66086","references":[{"url":"https://www.unisoc.com/en/support/product-security-bulletin/2109454821805424641","label":"security@unisoc.com"}],"tags":["nvd","cve.org"],"epss":0.00455,"epssPercentile":0.39345,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-15T18:01:14.326188Z"},"scores":{"nvd":9.8,"cna":8.3},"ingestedAt":"2026-10-12T14:50:34.075Z","slug":"CVE-2026-66086","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}