What is CVE-2026-0021?

CVE-2026-0021 is a high-severity vulnerability in Google Android, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 8.4/10. Published 2026-03-02.

How severe is CVE-2026-0021?

High severity. CVSS v3 base score is 8.4 out of 10.

Vulnerability in Google Android

CVE-2026-0021

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 i…

EPSS: 0.001 (1.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Google Android — versions 15.0, 14.0, 15

Weakness classification (CWE)

CWE-441 — Unintended Proxy or Intermediary (Confused Deputy)

References

security@android.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-0021?: CVE-2026-0021 is a high-severity vulnerability in Google Android, classified under Unintended Proxy or Intermediary (Confused Deputy). CVSS score: 8.4/10. Published 2026-03-02.
How severe is CVE-2026-0021?: High severity. CVSS v3 base score is 8.4 out of 10.