{"id":"CVE-2026-21087","title":"Out-of-bounds write in libmdnie.so prior to SMR Sep-2026 Release 1 allows local attackers to execute arbitrary code with system server privilege.","summary":"Out-of-bounds write in libmdnie.so prior to SMR Sep-2026 Release 1 allows local attackers to execute arbitrary code with system server privilege.","severity":"high","cvss":8.6,"cvssVector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-787"],"vendor":"Samsung Mobile","product":"Samsung Mobile Devices","affected":["devices (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-10T00:00:00+00:00"},"published":"2026-09-09","updated":"2026-09-11","sourceUpdated":"2026-09-11T03:56:40.360Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-21087","references":[{"url":"https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=09"}],"tags":["cve.org"],"epss":0.00115,"epssPercentile":0.01727,"ingestedAt":"2026-09-11T16:45:47.925Z","slug":"CVE-2026-21087","body":"## Overview\n\nOut-of-bounds write in libmdnie.so prior to SMR Sep-2026 Release 1 allows local attackers to execute arbitrary code with system server privilege.\n\n## Affected\n\n- `devices (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":47.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":56230,"id":"CVE-2026-21087","ts":1789074388659,"field":"cvss","old":"8.6","new":"7.8"}]}