What is CVE-2021-0557?

CVE-2021-0557 is a high-severity vulnerability in Google Android, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2021-06-22.

How severe is CVE-2021-0557?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Google Android

CVE-2021-0557

In setRange of ABuffer.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to remote code execution with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-179046129

Vulnerability class: Integer Overflow

Published 2021-06-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (50.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Google Android — versions 11.0
Android — versions Android-11

Weakness classification (CWE)

References

source.android.com/security/bulletin/pixel/2021-06-01 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-0557?: CVE-2021-0557 is a high-severity vulnerability in Google Android, classified under Integer Overflow or Wraparound. CVSS score: 8.8/10. Published 2021-06-22.
How severe is CVE-2021-0557?: High severity. CVSS v3 base score is 8.8 out of 10.