CVE-2021-0522

HIGH

Android -11, Android-9, Android-10 - Use After Free

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-0522. PoCs published by nanopathi.

AI-analyzed exploit summary This repository contains a functional exploit PoC for CVE-2021-0522, targeting the Fluoride Bluetooth stack in Android. It includes build scripts, source code, and documentation for compiling and running the exploit on AOSP and Linux environments.

Description

In ConnectionHandler::SdpCb of connection_handler.cc, there is a possible out of bounds read due to a use after free. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-9 Android-10Android ID: A-174182139

Exploits (1)

nomisec WORKING POC
by nanopathi · poc
https://github.com/nanopathi/system_bt_AOSP10_r33_CVE-2021-0522

This repository contains a functional exploit PoC for CVE-2021-0522, targeting the Fluoride Bluetooth stack in Android. It includes build scripts, source code, and documentation for compiling and running the exploit on AOSP and Linux environments.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Fluoride Bluetooth stack (AOSP10_r33)
No auth needed
Prerequisites: Access to a vulnerable Android device or Linux environment with Bluetooth stack · Clang compiler and build dependencies
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://source.android.com/security/bulletin/2021-06-01

Scores

CVSS v3 7.5
EPSS 0.0138
EPSS Percentile 68.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-125 CWE-416
Status published
Products (3)
google/android 9.0
google/android 10.0
google/android 11.0
Published Jun 21, 2021
Tracked Since Feb 18, 2026