CVE-2021-0963

HIGH

Android - Local Privilege Escalation via Tapjacking Overlay Attack

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-0963. PoCs published by Trinadh465.

AI-analyzed exploit summary This repository contains test files and source code related to CVE-2021-0963, focusing on the Android KeyChain service. The files include unit tests, service implementations, and database handling, but do not contain functional exploit code.

Description

In onCreate of KeyChainActivity.java, there is a possible way to use an app certificate stored in keychain due to a tapjacking/overlay attack. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-9Android ID: A-199754277

Exploits (1)

nomisec WRITEUP
by Trinadh465 · poc
https://github.com/Trinadh465/packages_apps_KeyChain_AOSP10_r33_CVE-2021-0963

This repository contains test files and source code related to CVE-2021-0963, focusing on the Android KeyChain service. The files include unit tests, service implementations, and database handling, but do not contain functional exploit code.

Classification
Writeup 90%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: Android KeyChain service (AOSP 10 r33)
No auth needed
Prerequisites: Access to Android KeyChain service
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 7.1
EPSS 0.0020
EPSS Percentile 9.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Details

CWE
CWE-1021
Status published
Products (4)
google/android 9.0
google/android 10.0
google/android 11.0
google/android 12.0
Published Dec 15, 2021
Tracked Since Feb 18, 2026