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CVE-2021-0963

HighPublished

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...

Published: Dec 15, 2021
Updated: Aug 3, 2024
Assigning CNA: google_android
Evidence observed: Aug 8, 2026

Primary CVSS

7.1/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

EPSS probability estimate

0.2%

Low · next 30 days

Percentile: 9.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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

Sources

packages_apps_KeyChain_AOSP10_r33_CVE-2021-0963Patch
Android KeyChain package with patch for CVE-2021-0963, addressing a security vulnerability in AOSP 10.

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