CVE-2018-21070 Security feature bypass in n/a

What is CVE-2018-21070?

CVE-2018-21070 is a high-severity vulnerability in Google Android, published on 8 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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).

Weakness: CWE-354

Which versions are affected by CVE-2018-21070?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2018-21070?

No fix has been published for CVE-2018-21070 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-21070 being exploited?

There is no known exploitation of CVE-2018-21070 in the wild and no public exploit code.

Other vulnerabilities in Google Android

• CVE-2026-58704 Google Pixel Improper Authorization Exploited High 8.8
• CVE-2025-48543 Android Runtime Use-After-Free Exploited High 8.8
• CVE-2023-35674 Android Framework Privilege Escalation Exploited High 8.8
• CVE-2025-48595 Android Framework Integer Overflow Exploited High 8.4
• CVE-2024-32896 Android Pixel Privilege Escalation Exploited High 8.1

All Google Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5m3g-3f6j-532p.