CVE-2021-39810 — Missing Authorization in Packages Apps NFC

CWE-862 — Missing Authorization4 documents4 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 96.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Platform Packages Apps NFCGoogle Android
Timeline
PublishedOct 30
Latest updateSep 1

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶Androidplatform/packages_apps_nfc13:0 — 13:2025-09-01
▶CVEListV5google/android13
▶NVDgoogle/android13.0

🔴Vulnerability Details

2
OSV
CVE-2021-39810: In verifyDefaults of CardEmulationManager↗2025-09-01
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GHSA
GHSA-4xc5-w23c-5pxx: In NFC, there is a possible way to setup a default contactless payment app without user consent due to a missing permission check↗2023-10-30
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📋Vendor Advisories

1
Android
CVE-2021-39810: Android Security Bulletin 2025-09-01 CVE: CVE-2021-39810 Severity: HIGH Type: EoP Affected AOSP versions: 13 References: A-212610736↗2025-09-01
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