CVE-2026-0021
Cross-User Permission Bypass in Android AppInfoBase.java Leading to Privilege Escalation
Publication date: 2026-03-02
Last updated on: 2026-03-06
Assigner: Android (associated with Google Inc. or Open Handset Alliance)
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| android | 14.0 | |
| android | 15.0 | |
| android | 16.0 | |
| android | 16.0 | |
| android | 16.0 | |
| android | 16.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-441 | 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in the hasInteractAcrossUsersFullPermission method of the AppInfoBase.java file. It is a possible cross-user permission bypass caused by a confused deputy scenario. Essentially, this means that an application or process might be tricked into performing actions on behalf of another user without proper permission checks.
Exploitation of this vulnerability can lead to local escalation of privilege, allowing an attacker to gain higher privileges on the device without needing any additional execution privileges or user interaction.
How can this vulnerability impact me? :
This vulnerability can impact you by allowing an attacker with local access to escalate their privileges on the affected system. Because no additional execution privileges or user interaction are required, an attacker could exploit this flaw to gain unauthorized access or control over resources or data belonging to other users on the same device.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know