What is CVE-2023-21320?

CVE-2023-21320 is a medium-severity vulnerability in Google Android, classified under Observable Discrepancy. CVSS score: 5.5/10. Published 2023-10-30.

How severe is CVE-2023-21320?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Google Android

CVE-2023-21320

In Device Policy, there is a possible way to verify if a particular admin app is registered on the device due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

Published 2023-10-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (0.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 0th percentile — 0.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: -0.000

Affected products

Google Android — versions 14

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

source.android.com/docs/security/bulletin/android-14 (Vendor Advisory)

Frequently asked questions

What is CVE-2023-21320?: CVE-2023-21320 is a medium-severity vulnerability in Google Android, classified under Observable Discrepancy. CVSS score: 5.5/10. Published 2023-10-30.
How severe is CVE-2023-21320?: Medium severity. CVSS v3 base score is 5.5 out of 10.