In multiple locations, there is a possible out of bounds read and write due to a heap buffer overflow. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.
https://source.android.com/docs/security/bulletin/2026/2026-03-01
https://www.helpnetsecurity.com/2026/03/03/android-march-2026-security-patch-cve-2026-21385/
https://thehackernews.com/2026/03/google-confirms-cve-2026-21385-in.html
https://securityaffairs.com/188823/security/android-devices-hit-by-exploited-qualcomm-flaw-cve-2026-21385.html
Source: Mitre, NVD
Published: 2026-03-02
Updated: 2026-03-06
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.00094