ASB-A-212610736

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Import Source
https://storage.googleapis.com/android-osv/ASB-A-212610736.json
JSON Data
https://api.osv.dev/v1/vulns/ASB-A-212610736
Aliases
  • A-212610736
  • CVE-2021-39810
Published
2025-09-01T00:00:00Z
Modified
2025-09-02T14:59:13.694122Z
Summary
[none]
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.

References

Affected packages

Android / platform/packages/apps/Nfc

Package

Name
platform/packages/apps/Nfc

Affected ranges

Type
ECOSYSTEM
Events
Introduced
13:0
Fixed
13:2025-09-01

Affected versions

Other

13

Ecosystem specific 

{
    "vanir_signatures": [
        {
            "signature_type": "Function",
            "deprecated": false,
            "digest": {
                "length": 1541.0,
                "function_hash": "114555253436938247442654722844860424902"
            },
            "signature_version": "v1",
            "target": {
                "file": "src/com/android/nfc/cardemulation/CardEmulationManager.java",
                "function": "verifyDefaults"
            },
            "id": "ASB-A-212610736-12b2d733",
            "source": "https://android.googlesource.com/platform/packages/apps/Nfc/+/47d46119729be8e461cf61de51da3c8a259941a3"
        },
        {
            "signature_type": "Line",
            "deprecated": false,
            "digest": {
                "threshold": 0.9,
                "line_hashes": [
                    "295226570849169871908183095233029651519",
                    "112541039568483635236602289802364385895",
                    "315852062032627358066014619176170590841",
                    "249128550112373829776150518890059810162",
                    "281669263796947544548992269806752348521",
                    "260653643456319798916093378723387081601",
                    "267170763367918631264413204148772080392",
                    "55585520962156346804601262619264182273",
                    "99332722928603672887433464135966973869",
                    "218587883112346944518312278284554342765",
                    "215211100333251195161568310147972866731",
                    "143594581367930046090564332823308720287",
                    "18077831500770260774758371278474319423",
                    "149607452231559639793439985874377337804"
                ]
            },
            "signature_version": "v1",
            "target": {
                "file": "src/com/android/nfc/cardemulation/CardEmulationManager.java"
            },
            "id": "ASB-A-212610736-98a74f8e",
            "source": "https://android.googlesource.com/platform/packages/apps/Nfc/+/47d46119729be8e461cf61de51da3c8a259941a3"
        }
    ],
    "types": [
        "EoP"
    ],
    "severity": "High",
    "spl": "2025-09-01",
    "fixes": [
        "https://android.googlesource.com/platform/packages/apps/Nfc/+/47d46119729be8e461cf61de51da3c8a259941a3"
    ]
}