CVE-2025-58487: Samsung Account Auth Bypass Vulnerability

CVE-2025-58487 Overview

CVE-2025-58487 is an improper authorization vulnerability affecting Samsung Account prior to version 15.5.01.1. This authorization bypass flaw allows a local attacker to launch arbitrary activities with Samsung Account privileges, potentially enabling unauthorized actions on behalf of the Samsung Account application.

Critical Impact

Local attackers can exploit improper authorization controls to execute arbitrary activities with elevated Samsung Account privileges, potentially compromising the integrity of user account operations on affected Samsung devices.

Affected Products

• Samsung Account versions prior to 15.5.01.1

Discovery Timeline

• 2025-12-02 - CVE-2025-58487 published to NVD
• 2025-12-03 - Last updated in NVD database

Technical Details for CVE-2025-58487

Vulnerability Analysis

This vulnerability is classified as an improper authorization issue affecting the Samsung Account application on mobile devices. The flaw has been assigned a CVSS 3.1 base score of 3.3 (Low severity) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

The CVSS metrics indicate:

• Attack Vector (AV:L): Local access is required to exploit this vulnerability
• Attack Complexity (AC:L): Low complexity attack with no specialized conditions needed
• Privileges Required (PR:L): Low-level privileges are required on the target device
• User Interaction (UI:N): No user interaction is necessary for exploitation
• Scope (S:U): The impact remains within the vulnerable component
• Confidentiality (C:N): No impact on confidentiality
• Integrity (I:L): Low impact on integrity
• Availability (A:N): No impact on availability

The EPSS (Exploit Prediction Scoring System) data shows a probability of 0.017% at the 3.167 percentile, indicating a relatively low likelihood of exploitation in the wild.

Root Cause

The root cause of CVE-2025-58487 lies in improper authorization checks within the Samsung Account application. The application fails to properly validate whether the calling entity has appropriate permissions before allowing activity launches, enabling unauthorized components to invoke Samsung Account activities with the application's elevated privileges.

This type of vulnerability is common in Android applications where intent handling and activity exports are not properly secured. When an activity is exported or accessible to other applications without adequate authorization verification, malicious local applications can leverage this to perform actions they would not normally be permitted to execute.

Attack Vector

The attack vector for this vulnerability requires local access to the affected Samsung device. An attacker with a malicious application installed on the target device can exploit the improper authorization controls in Samsung Account to:

1. Craft a malicious intent targeting the vulnerable Samsung Account activity
2. Launch the activity without proper authorization verification
3. Execute arbitrary activities with Samsung Account privileges
4. Potentially manipulate account-related operations or access protected functionality

Since the vulnerability requires local privileges (PR:L), the attacker needs to have an application already installed on the victim's device, which could be achieved through social engineering, supply chain attacks, or other application distribution methods.

Detection Methods for CVE-2025-58487

Indicators of Compromise

• Unusual activity launches originating from unknown or suspicious applications targeting Samsung Account
• Unexpected Samsung Account behavior or unauthorized account-related operations
• Suspicious inter-process communication (IPC) patterns involving the Samsung Account application
• Log entries showing activity invocations from non-standard callers to Samsung Account components

Detection Strategies

Organizations and security teams should implement the following detection strategies:

1. Application Behavior Monitoring: Monitor for abnormal activity patterns from the Samsung Account application, particularly those initiated by third-party applications
2. Intent Traffic Analysis: Analyze intent traffic on Android devices to identify suspicious activity launch patterns targeting Samsung Account
3. Privilege Escalation Detection: Watch for applications attempting to leverage Samsung Account privileges for operations beyond their normal scope
4. Mobile Device Management (MDM) Alerts: Configure MDM solutions to flag devices running vulnerable Samsung Account versions

Monitoring Recommendations

Security teams should establish continuous monitoring for Samsung mobile device fleets:

• Enable detailed logging for Samsung Account application activities
• Implement endpoint detection and response (EDR) solutions capable of monitoring Android inter-process communication
• Establish baseline behavior patterns for Samsung Account to identify anomalies
• Monitor for installation of potentially malicious applications that could exploit this vulnerability

How to Mitigate CVE-2025-58487

Immediate Actions Required

• Update Samsung Account to version 15.5.01.1 or later immediately
• Review installed applications for potential malicious software that could exploit this vulnerability
• Enable automatic updates for Samsung applications through Samsung Galaxy Store
• Implement mobile device management policies requiring minimum application versions

Patch Information

Samsung has addressed this vulnerability in Samsung Account version 15.5.01.1. The security patch information is available through Samsung's official security advisory at the Samsung Mobile Security Portal.

Users should update their Samsung Account application through the Samsung Galaxy Store or through system updates. Enterprise administrators should push updates through their MDM solutions to ensure all managed devices receive the patched version.

Workarounds

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

• Restrict installation of third-party applications from unknown sources
• Review and audit currently installed applications for suspicious behavior
• Enable Samsung Knox or other mobile security solutions to monitor for exploitation attempts
• Limit device access to trusted users only until the patch can be applied

For enterprise environments, MDM policies can be configured to restrict Samsung Account functionality or isolate affected devices until updates are deployed:

# Example MDM policy configuration concept
# Restrict untrusted application installations
adb shell settings put secure install_non_market_apps 0

# Check current Samsung Account version
adb shell dumpsys package com.osp.app.signin | grep versionName