CVE-2023-21307 Auth bypass in Android

What is CVE-2023-21307?

CVE-2023-21307 is a medium-severity authentication bypass vulnerability in Google Android, published on 30 Oct 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

In Bluetooth, there is a possible way for a paired Bluetooth device to access a long term identifier for an Android device due to a permissions bypass. This could lead to local information disclosure with no additional execution privileges needed. User interaction is needed for exploitation.

Weakness: CWE-287

Which versions are affected by CVE-2023-21307?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2023-21307?

No fix has been published for CVE-2023-21307 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-2023-21307 being exploited?

There is no known exploitation of CVE-2023-21307 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-2ch2-jw27-c5r3.