CVE-2021-39805 Information disclosure in Android

What is CVE-2021-39805?

CVE-2021-39805 is a medium-severity vulnerability in Google Android, published on 12 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In l2cble_process_sig_cmd of l2c_ble.cc, there is a possible out of bounds read due to a missing bounds check. This could lead to remote information disclosure through Bluetooth with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12LAndroid ID: A-212694559

Weakness: CWE-125

Which versions are affected by CVE-2021-39805?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-39805?

Apply the vendor's patch.

Is CVE-2021-39805 being exploited?

There is no known exploitation of CVE-2021-39805 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 A-212694559, ASB-A-212694559, GHSA-4c23-j7cr-737q.