What is CVE-2020-35551?

CVE-2020-35551 is a critical-severity vulnerability in Google Android, classified under Authentication Bypass by Capture-replay. CVSS score: 9.8/10. Published 2020-12-18.

How severe is CVE-2020-35551?

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

Vulnerability in Google Android

CVE-2020-35551

An issue was discovered on Samsung mobile devices with O(8.x), P(9.0), and Q(10.0) (Exynos chipsets) software. They allow attackers to conduct RPMB state-change attacks because an unauthorized RPMB write operation can be replayed, a related issue to CVE-2020-13799. The Samsung ID is SVE-2020-18100 (December 2020).

Published 2020-12-18 · 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: 0.004 (34.6th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Google Android — versions 8.0, 8.1, 9.0

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

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

Frequently asked questions

What is CVE-2020-35551?: CVE-2020-35551 is a critical-severity vulnerability in Google Android, classified under Authentication Bypass by Capture-replay. CVSS score: 9.8/10. Published 2020-12-18.
How severe is CVE-2020-35551?: Critical severity. CVSS v3 base score is 9.8 out of 10.