This vulnerability (CVE-2026-21006) concerns improper access control (CWE-284) in Samsung DeX on Samsung Mobile Devices before the SMR April 2026 Release 1. It allows physical attackers to bypass access restrictions and view hidden notification contents. The CVSS 4.0 vector indicates the attack requires physical access (AV:P), has low attack complexity (AC:L), no privileges or user interaction needed, and impacts confidentiality with high scope and integrity and availability impacts. No patch or official remediation guidance has been provided by Samsung Mobile yet.

An attacker with physical access to the affected Samsung Mobile Device can view hidden notification contents that should be protected. This could lead to unauthorized disclosure of potentially sensitive information contained in notifications. There is no indication of remote exploitation or privilege escalation. The impact is limited to confidentiality exposure via physical access.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit physical access to affected devices to trusted individuals only. Monitor Samsung Mobile advisories for updates regarding patches or mitigations.