{"id":"ASB-A-212610736","details":"In verifyDefaults of CardEmulationManager.java, there is a possible way to set a third party app as the default contactless payment app without user consent due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-212610736","CVE-2021-39810"],"modified":"2026-09-18T15:47:37.392928379Z","published":"2025-09-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2025-09-01"}],"affected":[{"package":{"name":"platform/packages/apps/Nfc","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13:0"},{"fixed":"13:2025-09-01"}]}],"versions":["13"],"ecosystem_specific":{"vanir_signatures":[{"id":"ASB-A-212610736-12b2d733","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/apps/Nfc/+/47d46119729be8e461cf61de51da3c8a259941a3","target":{"file":"src/com/android/nfc/cardemulation/CardEmulationManager.java","function":"verifyDefaults"},"deprecated":false,"digest":{"function_hash":"114555253436938247442654722844860424902","length":1541}},{"target":{"file":"src/com/android/nfc/cardemulation/CardEmulationManager.java"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["295226570849169871908183095233029651519","112541039568483635236602289802364385895","315852062032627358066014619176170590841","249128550112373829776150518890059810162","281669263796947544548992269806752348521","260653643456319798916093378723387081601","267170763367918631264413204148772080392","55585520962156346804601262619264182273","99332722928603672887433464135966973869","218587883112346944518312278284554342765","215211100333251195161568310147972866731","143594581367930046090564332823308720287","18077831500770260774758371278474319423","149607452231559639793439985874377337804"]},"id":"ASB-A-212610736-98a74f8e","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/apps/Nfc/+/47d46119729be8e461cf61de51da3c8a259941a3"}],"fixes":["https://android.googlesource.com/platform/packages/apps/Nfc/+/47d46119729be8e461cf61de51da3c8a259941a3"],"severity":"High","spl":"2025-09-01","types":["EoP"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-212610736.json"}}],"schema_version":"1.9.0"}