CVE-2021-39810

Published Oct 30, 2023 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-26167 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.
History
Type Values Removed Values Added
CPEs cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:* cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description In NFC, there is a possible way to setup a 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. 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
Weaknesses

Sources

Status
PUBLISHED
Assigner
google_android
Published
Updated
Sep 4, 2025, 6:33 PM
Reserved
Aug 23, 2021, 7:27 PM
Status
Analyzed
Published
Oct 30, 2023, 5:15 PM
Modified
Jun 17, 2026, 4:04 AM