CVE-2023-21094 Missing authorization in Android

What is CVE-2023-21094?

CVE-2023-21094 is a high-severity missing authorization vulnerability in Google Android, published on 19 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In sanitize of LayerState.cpp, there is a possible way to take over the screen display and swap the display content due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-248031255

Weakness: CWE-862

Which versions are affected by CVE-2023-21094?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2023-21094?

Apply the vendor's patch.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2023-21094 being exploited?

There is no known exploitation of CVE-2023-21094 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

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 A-248031255, ASB-A-248031255, GHSA-5jqw-jq8j-37r3.