{"id":"CVE-2026-28603","title":"In assertSafeToStartCustomActivity of AppRestrictionsFragment.java, there is a possible read/write access to private files due to a confused deputy","summary":"In assertSafeToStartCustomActivity of AppRestrictionsFragment.java, there is a possible read/write access to private files due to a confused deputy. This could lead to local escalation of privilege with no additional execution privileges…","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-441"],"vendor":"google","product":"android","affected":["android = 14.0","android = 15.0","android = 16.0","android = 17.0"],"published":"2026-09-08","updated":"2026-09-15","sourceUpdated":"2026-09-15T14:27:17.730","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-28603","references":[{"url":"https://source.android.com/docs/security/bulletin/2026/2026-09-01","label":"security@android.com"}],"tags":["nvd","cve.org"],"epss":0.00088,"epssPercentile":0.0037,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-10T03:57:06.275291Z"},"ingestedAt":"2026-09-08T19:08:49.643Z","slug":"CVE-2026-28603","body":"## Overview\n\nIn assertSafeToStartCustomActivity of AppRestrictionsFragment.java, there is a possible read/write access to private files due to a confused deputy. 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":201513,"id":"CVE-2026-28603","ts":1789399510874,"field":"cvss","old":null,"new":"7.8"},{"seq":201512,"id":"CVE-2026-28603","ts":1789399510874,"field":"severity","old":"none","new":"high"},{"seq":200247,"id":"CVE-2026-28603","ts":1789397086275,"field":"cvss","old":"7.8","new":null},{"seq":200246,"id":"CVE-2026-28603","ts":1789397086275,"field":"severity","old":"high","new":"none"},{"seq":198171,"id":"CVE-2026-28603","ts":1789391740078,"field":"cvss","old":null,"new":"7.8"},{"seq":198170,"id":"CVE-2026-28603","ts":1789391740078,"field":"severity","old":"none","new":"high"},{"seq":195964,"id":"CVE-2026-28603","ts":1789383399365,"field":"cvss","old":"7.8","new":null},{"seq":195963,"id":"CVE-2026-28603","ts":1789383399365,"field":"severity","old":"high","new":"none"},{"seq":194893,"id":"CVE-2026-28603","ts":1789380300394,"field":"cvss","old":null,"new":"7.8"},{"seq":194892,"id":"CVE-2026-28603","ts":1789380300394,"field":"severity","old":"none","new":"high"},{"seq":193680,"id":"CVE-2026-28603","ts":1789378268900,"field":"cvss","old":"7.8","new":null},{"seq":193679,"id":"CVE-2026-28603","ts":1789378268900,"field":"severity","old":"high","new":"none"},{"seq":192467,"id":"CVE-2026-28603","ts":1789376233272,"field":"cvss","old":null,"new":"7.8"},{"seq":192466,"id":"CVE-2026-28603","ts":1789376233272,"field":"severity","old":"none","new":"high"},{"seq":191254,"id":"CVE-2026-28603","ts":1789373126592,"field":"cvss","old":"7.8","new":null},{"seq":191253,"id":"CVE-2026-28603","ts":1789373126592,"field":"severity","old":"high","new":"none"},{"seq":190039,"id":"CVE-2026-28603","ts":1789369121017,"field":"cvss","old":null,"new":"7.8"},{"seq":190038,"id":"CVE-2026-28603","ts":1789369121017,"field":"severity","old":"none","new":"high"},{"seq":188826,"id":"CVE-2026-28603","ts":1789368038334,"field":"cvss","old":"7.8","new":null},{"seq":188825,"id":"CVE-2026-28603","ts":1789368038334,"field":"severity","old":"high","new":"none"},{"seq":187609,"id":"CVE-2026-28603","ts":1789364996504,"field":"cvss","old":null,"new":"7.8"},{"seq":187608,"id":"CVE-2026-28603","ts":1789364996504,"field":"severity","old":"none","new":"high"},{"seq":186396,"id":"CVE-2026-28603","ts":1789363002366,"field":"cvss","old":"7.8","new":null},{"seq":186395,"id":"CVE-2026-28603","ts":1789363002366,"field":"severity","old":"high","new":"none"},{"seq":185182,"id":"CVE-2026-28603","ts":1789360969694,"field":"cvss","old":null,"new":"7.8"},{"seq":185181,"id":"CVE-2026-28603","ts":1789360969694,"field":"severity","old":"none","new":"high"},{"seq":183969,"id":"CVE-2026-28603","ts":1789357943390,"field":"cvss","old":"7.8","new":null},{"seq":183968,"id":"CVE-2026-28603","ts":1789357943390,"field":"severity","old":"high","new":"none"},{"seq":182221,"id":"CVE-2026-28603","ts":1789354097883,"field":"cvss","old":null,"new":"7.8"},{"seq":182220,"id":"CVE-2026-28603","ts":1789354097883,"field":"severity","old":"none","new":"high"},{"seq":181014,"id":"CVE-2026-28603","ts":1789352943353,"field":"cvss","old":"7.8","new":null},{"seq":181013,"id":"CVE-2026-28603","ts":1789352943353,"field":"severity","old":"high","new":"none"},{"seq":179807,"id":"CVE-2026-28603","ts":1789350001060,"field":"cvss","old":null,"new":"7.8"},{"seq":179806,"id":"CVE-2026-28603","ts":1789350001060,"field":"severity","old":"none","new":"high"},{"seq":178600,"id":"CVE-2026-28603","ts":1789347814302,"field":"cvss","old":"7.8","new":null},{"seq":178599,"id":"CVE-2026-28603","ts":1789347814302,"field":"severity","old":"high","new":"none"},{"seq":177393,"id":"CVE-2026-28603","ts":1789346181697,"field":"cvss","old":null,"new":"7.8"},{"seq":177392,"id":"CVE-2026-28603","ts":1789346181697,"field":"severity","old":"none","new":"high"},{"seq":176186,"id":"CVE-2026-28603","ts":1789342751991,"field":"cvss","old":"7.8","new":null},{"seq":176185,"id":"CVE-2026-28603","ts":1789342751991,"field":"severity","old":"high","new":"none"},{"seq":175970,"id":"CVE-2026-28603","ts":1789342358493,"field":"cvss","old":null,"new":"7.8"},{"seq":175969,"id":"CVE-2026-28603","ts":1789342358493,"field":"severity","old":"none","new":"high"},{"seq":175510,"id":"CVE-2026-28603","ts":1789338389993,"field":"cvss","old":"7.8","new":null},{"seq":175509,"id":"CVE-2026-28603","ts":1789338389993,"field":"severity","old":"high","new":"none"},{"seq":174305,"id":"CVE-2026-28603","ts":1789334604747,"field":"cvss","old":null,"new":"7.8"},{"seq":174304,"id":"CVE-2026-28603","ts":1789334604747,"field":"severity","old":"none","new":"high"},{"seq":173100,"id":"CVE-2026-28603","ts":1789333197406,"field":"cvss","old":"7.8","new":null},{"seq":173099,"id":"CVE-2026-28603","ts":1789333197406,"field":"severity","old":"high","new":"none"},{"seq":171914,"id":"CVE-2026-28603","ts":1789330884460,"field":"cvss","old":null,"new":"7.8"},{"seq":171913,"id":"CVE-2026-28603","ts":1789330884460,"field":"severity","old":"none","ne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