Android AppInfoBase cross-user permission bypass (CVE20260021)
CVE-2026-0021 Published on March 2, 2026
In hasInteractAcrossUsersFullPermission of AppInfoBase.java, there is a possible cross-user permission bypass due to a confused deputy. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Vulnerability Analysis
CVE-2026-0021 can be exploited with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Confused Deputy Vulnerability?
The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.
CVE-2026-0021 has been classified to as a Confused Deputy vulnerability or weakness.
Products Associated with CVE-2026-0021
Want to know whenever a new CVE is published for Google Android? stack.watch will email you.
Affected Versions
Google Android:- Version 16-qpr2 is affected.
- Version 16 is affected.
- Version 15 is affected.
- Version 14 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.