CVE-2021-1034 Information disclosure in Android

What is CVE-2021-1034?

CVE-2021-1034 is a low-severity vulnerability in Google Android, published on 15 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In getLine1NumberForDisplay of PhoneInterfaceManager.java, there is apossible way to determine whether an app is installed, without querypermissions due to a missing permission check. This could lead to localinformation disclosure with no additional execution privileges needed. Userinteraction is not needed for exploitation.Product: AndroidVersions: Android-12Android ID: A-193441322

Weakness: CWE-862

Which versions are affected by CVE-2021-1034?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-1034?

Apply the vendor's patch.

Is CVE-2021-1034 being exploited?

There is no known exploitation of CVE-2021-1034 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-193441322, GHSA-v52j-x783-j885, PUB-A-193441322.