What is CVE-2020-28340?

CVE-2020-28340 is a critical-severity vulnerability in Google Android. CVSS score: 9.8/10. Published 2020-11-08.

How severe is CVE-2020-28340?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Google Android

CVE-2020-28340

An issue was discovered on Samsung mobile devices with O(8.x), P(9.0), Q(10.0), and R(11.0) software. Attackers can bypass Factory Reset Protection (FRP) via Secure Folder. The Samsung ID is SVE-2020-18546 (November 2020).

Published 2020-11-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (37.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.2% 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 8.0, 8.1, 9.0

References

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

Frequently asked questions

What is CVE-2020-28340?: CVE-2020-28340 is a critical-severity vulnerability in Google Android. CVSS score: 9.8/10. Published 2020-11-08.
How severe is CVE-2020-28340?: Critical severity. CVSS v3 base score is 9.8 out of 10.