CVE-2021-39810 | Vulnetix

CVE-2021-39810 PUBLISHED CVSS 7.8 HIGH

Reported by google_android · Published October 30, 2023

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.

Risk scores

CVSS 3.1

7.8

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Vendor	Product	Versions
Google	Android	13
google	android	0
Google	Android	13

Timeline

Oct 30, 2023 CVE Published
Oct 31, 2023 EPSS Score (30 in total, the first dated here)
Sep 24, 2025 CVE Updated
Mar 17, 2026 Security Advisory (3 in total, the first dated here)
Jul 23, 2026 Coalition ESS Score

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vulnetix vdb fixes CVE-2021-39810

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References

https://source.android.com/docs/security/bulletin/android-14 url

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