CVE-2025-58484: Samsung Cloud Assistant Info Disclosure

CVE-2025-58484 Overview

CVE-2025-58484 is a medium-severity vulnerability affecting Samsung Cloud Assistant prior to version 8.0.03.8. The vulnerability stems from incorrect default permissions that allow a local attacker to access partial data within the application sandbox. This represents an Insecure Permissions vulnerability that could lead to unauthorized information disclosure on affected Samsung devices.

Critical Impact

Local attackers can exploit incorrect default permissions to access sensitive sandbox data without authentication, potentially exposing user information stored by Samsung Cloud Assistant.

Affected Products

• Samsung Cloud Assistant versions prior to 8.0.03.8

Discovery Timeline

• 2025-12-02 - CVE CVE-2025-58484 published to NVD
• 2025-12-02 - Last updated in NVD database

Technical Details for CVE-2025-58484

Vulnerability Analysis

This vulnerability is classified with a CVSS v3.1 score of 4.0 (Medium) using the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. The attack requires local access to the device but does not require any privileges or user interaction to exploit.

Key CVSS metrics breakdown:

• Attack Vector (AV:L): Local access required - attacker must have physical or logical access to the target device
• Attack Complexity (AC:L): Low complexity - exploitation is straightforward once local access is obtained
• Privileges Required (PR:N): None - no special privileges needed to exploit
• User Interaction (UI:N): None - no user action required
• Confidentiality Impact (C:L): Low - partial data exposure within the sandbox

The EPSS (Exploit Prediction Scoring System) score is 0.016% with a percentile of 2.91, indicating a relatively low probability of exploitation in the wild.

Root Cause

The root cause of CVE-2025-58484 lies in improper permission configuration for the Samsung Cloud Assistant application sandbox. The application fails to properly restrict access to its data directory, allowing other local processes or users to read portions of the stored data. This is a common mobile application vulnerability where developers inadvertently configure overly permissive file system permissions, exposing sensitive data to unauthorized access.

Attack Vector

The attack vector is local, meaning an attacker would need to have some form of access to the target device. This could be achieved through:

1. Physical device access - Direct access to an unlocked device
2. Malicious application - Another app installed on the device exploiting the weak permissions
3. ADB access - Accessing the device through Android Debug Bridge if enabled

The vulnerability allows reading partial sandbox data, which could include cached user information, configuration files, or other sensitive data stored by Samsung Cloud Assistant.

The vulnerability manifests in the permission configuration of the Samsung Cloud Assistant application sandbox. Due to incorrect default permissions, local processes can access data that should be restricted to the application context only. For technical details, refer to the Samsung Mobile Security Advisory.

Detection Methods for CVE-2025-58484

Indicators of Compromise

• Unexpected processes or applications attempting to read Samsung Cloud Assistant data directories
• Anomalous file access patterns targeting /data/data/com.samsung.android.scloud/ or related paths
• Log entries indicating permission checks being bypassed or unusual sandbox access

Detection Strategies

Organizations and individuals can detect potential exploitation of this vulnerability through:

1. File Integrity Monitoring: Monitor access patterns to Samsung Cloud Assistant data directories for unauthorized read operations
2. Application Behavior Analysis: Track which applications are attempting to access other apps' sandbox directories
3. Security Audit Logging: Enable verbose logging on Android devices to capture file access events
4. Endpoint Detection and Response (EDR): Deploy mobile EDR solutions that can detect anomalous inter-application data access

SentinelOne Singularity provides comprehensive endpoint protection that can detect suspicious local file access patterns and alert on potential sandbox escape or permission exploitation attempts.

Monitoring Recommendations

• Implement continuous monitoring of file system access on enterprise-managed Samsung devices
• Configure mobile device management (MDM) solutions to alert on outdated Samsung Cloud Assistant versions
• Review device logs for any indicators of local privilege abuse or sandbox data access
• Ensure security policies require applications to be updated to patched versions promptly

How to Mitigate CVE-2025-58484

Immediate Actions Required

• Update Samsung Cloud Assistant to version 8.0.03.8 or later immediately
• Audit all Samsung devices in your environment for vulnerable application versions
• Review device access controls to limit physical access to sensitive devices
• Disable USB debugging (ADB) on production devices to reduce local attack surface

Patch Information

Samsung has addressed this vulnerability in Samsung Cloud Assistant version 8.0.03.8. The security patch corrects the default permission configuration to properly restrict sandbox data access.

For detailed patch information and additional security updates, refer to the official Samsung Mobile Security bulletin: https://security.samsungmobile.com/serviceWeb.smsb?year=2025&month=12

Users should update Samsung Cloud Assistant through the Samsung Galaxy Store or automatic device updates.

Workarounds

If immediate patching is not possible, consider the following temporary mitigations:

1. Restrict device access: Limit physical access to devices running vulnerable versions
2. Disable ADB: Ensure Android Debug Bridge is disabled to prevent remote local attacks
3. Application isolation: Use work profiles or Knox containers to isolate sensitive applications
4. Monitor for malicious apps: Ensure only trusted applications are installed on affected devices

# Verify Samsung Cloud Assistant version on Android device via ADB
adb shell dumpsys package com.samsung.android.scloud | grep versionName

# Disable ADB debugging to reduce attack surface
adb shell settings put global adb_enabled 0