What is CVE-2020-0478?

CVE-2020-0478 is a high-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-12-15.

How severe is CVE-2020-0478?

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

Buffer overflow in Google Android

CVE-2020-0478

In extend_frame_lowbd of restoration.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-150780418

Vulnerability class: Buffer Overflow

Published 2020-12-15 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.005 (39.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Google Android — versions 11.0
Android — versions Android-11

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

source.android.com/security/bulletin/pixel/2020-12-01 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2020-0478?: CVE-2020-0478 is a high-severity vulnerability in Google Android, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-12-15.
How severe is CVE-2020-0478?: High severity. CVSS v3 base score is 7.8 out of 10.