CVE-2021-0466 Information disclosure in Android

What is CVE-2021-0466?

CVE-2021-0466 is a high-severity vulnerability in Google Android, published on 11 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In startIpClient of ClientModeImpl.java, there is a possible identifier which could be used to track a device. This could lead to remote information disclosure to a proximal attacker, with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-154114734

Weakness: CWE-330

Which versions are affected by CVE-2021-0466?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-0466?

Apply the vendor's patch.

Is CVE-2021-0466 being exploited?

There is no known exploitation of CVE-2021-0466 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-154114734, ASB-A-154114734, GHSA-mv8v-wvhp-6wjw.