{"id":"CVE-2026-45531","title":"In read_boot_region of fsck.c, there is a possible out of bounds read due to a heap buffer overflow","summary":"In read_boot_region of fsck.c, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for expl…","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-122"],"vendor":"google","product":"android","affected":["android = 14.0","android = 15.0","android = 16.0","android = 17.0"],"published":"2026-09-08","updated":"2026-09-23","sourceUpdated":"2026-09-23T19:34:45.327","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-45531","references":[{"url":"https://source.android.com/docs/security/bulletin/2026/2026-09-01","label":"security@android.com"}],"tags":["nvd","cve.org"],"epss":0.0008,"epssPercentile":0.00213,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-10T03:57:32.503941Z"},"ingestedAt":"2026-09-08T19:08:49.641Z","slug":"CVE-2026-45531","body":"## Overview\n\nIn read_boot_region of fsck.c, there is a possible out of bounds read due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.\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":201680,"id":"CVE-2026-45531","ts":1789399605506,"field":"cvss","old":null,"new":"7.8"},{"seq":201679,"id":"CVE-2026-45531","ts":1789399605506,"field":"severity","old":"none","new":"high"},{"seq":200412,"id":"CVE-2026-45531","ts":1789397209863,"field":"cvss","old":"7.8","new":null},{"seq":200411,"id":"CVE-2026-45531","ts":1789397209863,"field":"severity","old":"high","new":"none"},{"seq":198336,"id":"CVE-2026-45531","ts":1789391842018,"field":"cvss","old":null,"new":"7.8"},{"seq":198335,"id":"CVE-2026-45531","ts":1789391842018,"field":"severity","old":"none","new":"high"},{"seq":196129,"id":"CVE-2026-45531","ts":1789383483194,"field":"cvss","old":"7.8","new":null},{"seq":196128,"id":"CVE-2026-45531","ts":1789383483194,"field":"severity","old":"high","new":"none"},{"seq":195058,"id":"CVE-2026-45531","ts":1789380374720,"field":"cvss","old":null,"new":"7.8"},{"seq":195057,"id":"CVE-2026-45531","ts":1789380374720,"field":"severity","old":"none","new":"high"},{"seq":193845,"id":"CVE-2026-45531","ts":1789378331181,"field":"cvss","old":"7.8","new":null},{"seq":193844,"id":"CVE-2026-45531","ts":1789378331181,"field":"severity","old":"high","new":"none"},{"seq":192632,"id":"CVE-2026-45531","ts":1789376324842,"field":"cvss","old":null,"new":"7.8"},{"seq":192631,"id":"CVE-2026-45531","ts":1789376324842,"field":"severity","old":"none","new":"high"},{"seq":191419,"id":"CVE-2026-45531","ts":1789373240573,"field":"cvss","old":"7.8","new":null},{"seq":191418,"id":"CVE-2026-45531","ts":1789373240573,"field":"severity","old":"high","new":"none"},{"seq":190204,"id":"CVE-2026-45531","ts":1789369202976,"field":"cvss","old":null,"new":"7.8"},{"seq":190203,"id":"CVE-2026-45531","ts":1789369202976,"field":"severity","old":"none","new":"high"},{"seq":188991,"id":"CVE-2026-45531","ts":1789368105953,"field":"cvss","old":"7.8","new":null},{"seq":188990,"id":"CVE-2026-45531","ts":1789368105953,"field":"severity","old":"high","new":"none"},{"seq":187774,"id":"CVE-2026-45531","ts":1789365062855,"field":"cvss","old":null,"new":"7.8"},{"seq":187773,"id":"CVE-2026-45531","ts":1789365062855,"field":"severity","old":"none","new":"high"},{"seq":186561,"id":"CVE-2026-45531","ts":1789363092673,"field":"cvss","old":"7.8","new":null},{"seq":186560,"id":"CVE-2026-45531","ts":1789363092673,"field":"severity","old":"high","new":"none"},{"seq":185347,"id":"CVE-2026-45531","ts":1789361024548,"field":"cvss","old":null,"new":"7.8"},{"seq":185346,"id":"CVE-2026-45531","ts":1789361024548,"field":"severity","old":"none","new":"high"},{"seq":184134,"id":"CVE-2026-45531","ts":1789358007873,"field":"cvss","old":"7.8","new":null},{"seq":184133,"id":"CVE-2026-45531","ts":1789358007873,"field":"severity","old":"high","new":"none"},{"seq":182385,"id":"CVE-2026-45531","ts":1789354155732,"field":"cvss","old":null,"new":"7.8"},{"seq":182384,"id":"CVE-2026-45531","ts":1789354155732,"field":"severity","old":"none","new":"high"},{"seq":181178,"id":"CVE-2026-45531","ts":1789352998003,"field":"cvss","old":"7.8","new":null},{"seq":181177,"id":"CVE-2026-45531","ts":1789352998003,"field":"severity","old":"high","new":"none"},{"seq":179971,"id":"CVE-2026-45531","ts":1789350073999,"field":"cvss","old":null,"new":"7.8"},{"seq":179970,"id":"CVE-2026-45531","ts":1789350073999,"field":"severity","old":"none","new":"high"},{"seq":178764,"id":"CVE-2026-45531","ts":1789347933064,"field":"cvss","old":"7.8","new":null},{"seq":178763,"id":"CVE-2026-45531","ts":1789347933064,"field":"severity","old":"high","new":"none"},{"seq":177557,"id":"CVE-2026-45531","ts":1789346218808,"field":"cvss","old":null,"new":"7.8"},{"seq":177556,"id":"CVE-2026-45531","ts":1789346218808,"field":"severity","old":"none","new":"high"},{"seq":176350,"id":"CVE-2026-45531","ts":1789342841686,"field":"cvss","old":"7.8","new":null},{"seq":176349,"id":"CVE-2026-45531","ts":1789342841686,"field":"severity","old":"high","new":"none"},{"seq":175804,"id":"CVE-2026-45531","ts":1789338624836,"field":"cvss","old":null,"new":"7.8"},{"seq":175803,"id":"CVE-2026-45531","ts":1789338624836,"field":"severity","old":"none","new":"high"},{"seq":175674,"id":"CVE-2026-45531","ts":1789338463855,"field":"cvss","old":"7.8","new":null},{"seq":175673,"id":"CVE-2026-45531","ts":1789338463855,"field":"severity","old":"high","new":"none"},{"seq":174469,"id":"CVE-2026-45531","ts":1789334653999,"field":"cvss","old":null,"new":"7.8"},{"seq":174468,"id":"CVE-2026-45531","ts":1789334653999,"field":"severity","old":"none","new":"high"},{"seq":173264,"id":"CVE-2026-45531","ts":1789333341331,"field":"cvss","old":"7.8","new":null},{"seq":173263,"id":"CVE-2026-45531","ts":1789333341331,"field":"severity","old":"high","new":"none"},{"seq":172078,"id":"CVE-2026-45531","ts":1789330940551,"field":"cvss","old":null,"new":"7.8"},{"seq":172077,"id":"CVE-2026-45531","ts":1789330940551,"field":"severity","old":"none","ne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