CVE-2021-0970 Deserialization in Android

What is CVE-2021-0970?

CVE-2021-0970 is a high-severity unsafe deserialization 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 createFromParcel of GpsNavigationMessage.java, there is a possible Parcel serialization/deserialization mismatch. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-9Android ID: A-196970023

Weakness: CWE-502

Which versions are affected by CVE-2021-0970?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2021-0970?

Apply the vendor's patch.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2021-0970 being exploited?

There is no known exploitation of CVE-2021-0970 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-196970023, ASB-A-196970023, GHSA-2rmc-v2mp-gxq4.