{"id":"CVE-2026-21089","title":"Improper input validation in removing style tag in libsubextractor.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.","summary":"Improper input validation in removing style tag in libsubextractor.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-20"],"vendor":"samsung","product":"android","affected":["android = 14.0","android = 15.0","android = 16.0","android = 17.0"],"published":"2026-09-09","updated":"2026-09-10","sourceUpdated":"2026-09-10T20:41:02.980","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-21089","references":[{"url":"https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=09","label":"mobile.security@samsung.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-10T17:46:13.175515Z"},"scores":{"nvd":7.8,"cna":6.9},"ingestedAt":"2026-09-13T14:43:50.957Z","epss":0.00105,"epssPercentile":0.01215,"slug":"CVE-2026-21089","body":"## Overview\n\nImproper input validation in removing style tag in libsubextractor.so prior to SMR Sep-2026 Release 1 allows local attackers to write out-of-bounds memory.\n\n## Affected\n\n- `android = 14.0`\n- `android = 15.0`\n- `android = 16.0`\n- `android = 17.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":56234,"id":"CVE-2026-21089","ts":1789074388674,"field":"cvss","old":"6.9","new":"7.8"},{"seq":56233,"id":"CVE-2026-21089","ts":1789074388674,"field":"severity","old":"medium","new":"high"}]}