What is CVE-2023-21380?

CVE-2023-21380 is a medium-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2023-10-30.

How severe is CVE-2023-21380?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Buffer overflow in Google Android

CVE-2023-21380

In Bluetooth, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Vulnerability class: Buffer Overflow

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

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.001 (0.5th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 0th percentile — 0.5% 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-787 — Out-of-bounds Write

References

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

Frequently asked questions

What is CVE-2023-21380?: CVE-2023-21380 is a medium-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2023-10-30.
How severe is CVE-2023-21380?: Medium severity. CVSS v3 base score is 6.7 out of 10.