What is CVE-2019-20557?

CVE-2019-20557 is a medium-severity vulnerability in Google Android. CVSS score: 4.6/10. Published 2020-03-24.

How severe is CVE-2019-20557?

Medium severity. CVSS v3 base score is 4.6 out of 10.

Vulnerability in Google Android

CVE-2019-20557

An issue was discovered on Samsung mobile devices with N(7.x), O(8.x), and P(9.0) software. Attackers can bypass Factory Reset Protection (FRP) via a SIM card by blocking the PUK code. The Samsung ID is SVE-2019-15262 (October 2019).

Published 2020-03-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.001 (2.6th percentile), scored 2026-10-25.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.6% 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 7.0, 7.1.0, 7.1.1

References

security.samsungmobile.com/securityUpdate.smsb (Vendor Advisory)

Frequently asked questions

What is CVE-2019-20557?: CVE-2019-20557 is a medium-severity vulnerability in Google Android. CVSS score: 4.6/10. Published 2020-03-24.
How severe is CVE-2019-20557?: Medium severity. CVSS v3 base score is 4.6 out of 10.