What is CVE-2023-21086?

CVE-2023-21086 is a high-severity vulnerability in Google Android. CVSS score: 7.8/10. Published 2023-04-19.

How severe is CVE-2023-21086?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-21086 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Google Android

CVE-2023-21086

In isToggleable of SecureNfcEnabler.java and SecureNfcPreferenceController.java, there is a possible way to enable NFC from a secondary account due to a permissions bypass. This could lead to local escalation of privilege from the Guest account with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-238298970

EPSS: 0.002 (7.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Google Android — versions 11.0, 12.0, 12.1
N/a Android — versions Android-11 Android-12 Android-12L Android-13

Public proof-of-concept exploits

References

security@android.com (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2023-21086?: CVE-2023-21086 is a high-severity vulnerability in Google Android. CVSS score: 7.8/10. Published 2023-04-19.
How severe is CVE-2023-21086?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-21086 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.