CVE-2025-58483: Samsung Galaxy Store Auth Bypass Flaw

CVE-2025-58483 Overview

CVE-2025-58483 is a mobile application vulnerability affecting Samsung Galaxy Store for Galaxy Watch. The vulnerability stems from improper export of Android application components, which allows a local attacker to install arbitrary applications on Galaxy Store. This flaw represents a significant security concern for Galaxy Watch users as it could enable unauthorized application installation through improperly exposed Android components.

Critical Impact

Local attackers can exploit improperly exported Android components to install arbitrary applications on Samsung Galaxy Store for Galaxy Watch, potentially compromising device integrity.

Affected Products

• Samsung Galaxy Store for Galaxy Watch prior to version 1.0.06.29

Discovery Timeline

• 2025-12-02 - CVE-2025-58483 published to NVD
• 2025-12-04 - Last updated in NVD database

Technical Details for CVE-2025-58483

Vulnerability Analysis

This vulnerability is classified under "NVD-CWE-Other" and involves the improper export of Android application components. In Android development, exported components (activities, services, broadcast receivers, or content providers) are accessible to other applications on the device. When these components are improperly exported without adequate protection mechanisms, they can be exploited by malicious local applications.

The vulnerability carries a CVSS 3.1 base score of 3.3 (Low) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. This indicates:

• Attack Vector (AV:L): Local access is required
• Attack Complexity (AC:L): Low complexity to exploit
• Privileges Required (PR:L): Low privileges needed
• User Interaction (UI:N): No user interaction required
• Scope (S:U): Unchanged scope
• Confidentiality (C:N): No confidentiality impact
• Integrity (I:L): Low integrity impact
• Availability (A:N): No availability impact

The EPSS (Exploit Prediction Scoring System) probability is 0.015% with a percentile of 2.416, indicating a relatively low likelihood of exploitation in the wild.

Root Cause

The root cause of CVE-2025-58483 lies in the improper configuration of Android manifest components within the Galaxy Store application for Galaxy Watch. When Android components are exported (explicitly via android:exported="true" or implicitly through intent filters without proper protection), they become accessible to other applications on the device. Without proper permission checks or signature verification, malicious applications can invoke these exported components to perform unauthorized actions.

In this case, the improperly exported components allow attackers to bypass normal application installation verification processes, enabling the installation of arbitrary applications through the Galaxy Store interface.

Attack Vector

The attack requires local access to the device, meaning an attacker would need to have a malicious application already installed on the target Galaxy Watch or paired smartphone. The malicious application can then interact with the improperly exported components of the Galaxy Store application to trigger unauthorized application installations.

The attack flow typically involves:

1. Attacker installs a malicious application on the victim's device
2. Malicious app identifies and targets the vulnerable exported component in Galaxy Store
3. Through inter-process communication (IPC), the malicious app invokes the exported component
4. The component processes the request without proper validation
5. Arbitrary application installation is triggered through Galaxy Store

Detection Methods for CVE-2025-58483

Indicators of Compromise

• Unexpected application installations on Galaxy Watch devices
• Unusual inter-app communication patterns targeting Galaxy Store
• Presence of unknown or suspicious applications that were not manually installed
• Log entries showing unexplained Galaxy Store component invocations

Detection Strategies

Organizations and users should implement the following detection strategies:

1. Application Inventory Monitoring: Regularly audit installed applications on Galaxy Watch devices to identify any unauthorized installations
2. Log Analysis: Review Android system logs for suspicious IPC calls targeting Galaxy Store components
3. Behavioral Analysis: Monitor for applications attempting to interact with Galaxy Store in unexpected ways
4. Version Verification: Check Galaxy Store version to confirm whether vulnerable versions (< 1.0.06.29) are deployed

Monitoring Recommendations

• Enable detailed logging on enterprise-managed Galaxy Watch devices
• Implement Mobile Device Management (MDM) solutions to monitor application installations
• Configure alerts for new application installations that weren't pushed through official channels
• Regularly review Samsung security bulletins for updates on this and related vulnerabilities

How to Mitigate CVE-2025-58483

Immediate Actions Required

• Update Samsung Galaxy Store for Galaxy Watch to version 1.0.06.29 or later immediately
• Review recently installed applications on affected devices for any suspicious entries
• Remove any unauthorized or suspicious applications discovered during review
• Consider restricting application installation permissions through device management policies

Patch Information

Samsung has addressed this vulnerability in Galaxy Store for Galaxy Watch version 1.0.06.29. The security patch information is available through Samsung's official security advisory at: https://security.samsungmobile.com/serviceWeb.smsb?year=2025&month=12

Users should update through the official Galaxy Store update mechanism or Samsung's device management infrastructure. Enterprise administrators should prioritize deployment of this update across managed Galaxy Watch fleets.

Workarounds

If immediate patching is not feasible, consider these temporary mitigations:

• Restrict Galaxy Watch connectivity to trusted paired devices only
• Implement strict application installation policies through MDM
• Monitor device activity for signs of exploitation
• Limit user ability to install third-party applications until patching is complete

For enterprise environments, consider temporarily restricting Galaxy Store functionality until the patch can be deployed across all affected devices.