CVE-2018-21070

Name: CVE-2018-21070
Creator: NVD / NIST
Published: 2020-04-08T18:15:14.447+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.4/10EPSS 0.13%

Last modified Jun 17, 2026

CVE-2018-21070 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. An issue was discovered on Samsung mobile devices with N(7.x), O(8.0) devices (MSM8998 or SDM845 chipsets) software. An attacker can bypass Secure Boot and obtain root access because of a missing Bootloader integrity check. EPSS estimates a 0.13% chance of exploitation in the next 30 days.

Description

An issue was discovered on Samsung mobile devices with N(7.x), O(8.0) devices (MSM8998 or SDM845 chipsets) software. An attacker can bypass Secure Boot and obtain root access because of a missing Bootloader integrity check. The Samsung ID is SVE-2018-11552 (May 2018).

Metrics

CVSS 3.1

8.4/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.13%

3.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-354

Affected Software

Vendor	Product	Versions
Google	Android	7.0
Google	Android	7.1.0
Google	Android	7.1.1
Google	Android	7.1.2
Google	Android	8.0

References

https://security.samsungmobile.com/securityUpdate.smsbVendor Advisory
https://security.samsungmobile.com/securityUpdate.smsbVendor Advisory

Timeline

Published: Apr 8, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-21070?

How severe is CVE-2018-21070?

CVE-2018-21070 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.

How do I fix CVE-2018-21070?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-21070?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST