CVE-2020-0449 Use after free in Android

What is CVE-2020-0449?

CVE-2020-0449 is a high-severity use after free vulnerability in Google Android, published on 10 Nov 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In btm_sec_disconnected of btm_sec.cc, there is a possible memory corruption due to a use after free. This could lead to remote code execution in the Bluetooth server with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11 Android-8.0 Android-8.1Android ID: A-162497143

Weakness: CWE-787, CWE-416

Which versions are affected by CVE-2020-0449?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2020-0449?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2020-0449 being exploited?

There is no known exploitation of CVE-2020-0449 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-162497143, ASB-A-162497143, GHSA-qjw7-2jwf-rhcv.