{"id":"CVE-2026-21121","title":"Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs.","summary":"Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs.","severity":"medium","cvss":6.9,"cvssVector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-280"],"vendor":"Samsung Mobile","product":"Samsung Mobile Devices","affected":["devices (all versions)"],"published":"2026-10-12","updated":"2026-10-16","sourceUpdated":"2026-10-16T17:17:33.523","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-21121","references":[{"url":"https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=10","label":"mobile.security@samsung.com"}],"tags":["nvd","cve.org"],"epss":0.00113,"epssPercentile":0.01397,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T16:08:12.191301Z"},"cvssSource":"cna","ingestedAt":"2026-10-12T14:50:34.085Z","slug":"CVE-2026-21121","body":"## Overview\n\nImproper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":38,"depthScoreParts":{"impact":38,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":220711,"id":"CVE-2026-21121","ts":1792026724844,"field":"cvss","old":null,"new":"6.9"},{"seq":220710,"id":"CVE-2026-21121","ts":1792026724844,"field":"severity","old":"none","new":"medium"}]}