CVE-2020-27052 Auth bypass in Android

What is CVE-2020-27052?

CVE-2020-27052 is a high-severity authentication bypass vulnerability in Google Android, published on 15 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In getLockTaskLaunchMode of ActivityRecord.java, there is a possible way for any app to start in Lock Task Mode due to a permissions bypass. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-158833495

Weakness: CWE-862

Which versions are affected by CVE-2020-27052?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2020-27052?

No fix has been published for CVE-2020-27052 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2020-27052 being exploited?

There is no known exploitation of CVE-2020-27052 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-9h3q-pjrc-xc8x.