CVE-2026-21081 in SamsungPassAutofill
Summary
by MITRE • 08/10/2026
Improper export of android application components in SamsungPassAutofill prior to version 5.2.10.x allows local attackers to access sensitive information. User interaction is required for triggering this vulnerability.
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Analysis
by VulDB Data Team • 08/10/2026
This vulnerability resides in the SamsungPassAutofill component of Samsung's mobile security ecosystem, specifically affecting versions prior to 5.2.10.x where improper export configuration of application components creates a critical access control flaw. The issue stems from the Android application manifest file containing components such as activities, services, or broadcast receivers that are declared with exported="true" without proper intent filters or security restrictions, allowing unauthorized local applications to directly invoke these components. The vulnerability requires user interaction to trigger, meaning an attacker must first gain some level of access to the device to install a malicious application that can exploit this misconfiguration.
The technical flaw represents a classic Android component exposure vulnerability that maps to CWE-922, which focuses on the improper export of application components in mobile platforms. When components are exported without proper security measures, they become accessible to any application installed on the device, creating an attack surface that can be exploited by malicious actors who understand the component interfaces. The SamsungPassAutofill service likely handles sensitive credential management operations, making it particularly dangerous when improperly exposed. This misconfiguration allows local attackers to potentially extract authentication tokens, user credentials, or other sensitive data that should remain protected within the secure application boundary.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable privilege escalation and lateral movement within the device's security model. Attackers who successfully exploit this flaw could gain access to stored passwords, biometric authentication data, or other sensitive information managed by SamsungPassAutofill. The requirement for user interaction suggests that social engineering or pre-existing malware installation may be necessary to initially compromise the device, but once executed, the vulnerability provides persistent access to sensitive authentication mechanisms. This type of vulnerability aligns with ATT&CK technique T1056.001, which covers credential access through input capture and T1068, which involves local privilege escalation.
Mitigation strategies should focus on implementing proper Android component security practices including restricting exports through intent filters, using the android:permission attribute to control access, and ensuring that only necessary components are exported. Organizations should immediately update to SamsungPassAutofill version 5.2.10.x or later, which contains the patched export configurations. Additionally, mobile device management solutions should enforce security policies that prevent apps from accessing unauthorized component interfaces, and regular security audits should verify that no other applications within the device ecosystem have similar export misconfigurations. The vulnerability highlights the importance of secure coding practices in mobile application development and demonstrates how seemingly minor configuration errors can create significant security risks in authentication systems.