CVE-2025-58486: Samsung Account RCE Vulnerability

CVE-2025-58486 Overview

CVE-2025-58486 is an improper input validation vulnerability affecting Samsung Account prior to version 15.5.01.1. This security flaw allows a local attacker to execute arbitrary scripts on affected devices, potentially leading to unauthorized actions within the Samsung Account application context.

The vulnerability stems from insufficient validation of user-supplied input, which can be exploited by malicious actors with local access to the device. While the attack requires local access and low privileges, successful exploitation could result in high integrity impact, allowing attackers to modify data or execute unauthorized operations.

Critical Impact

Local attackers can exploit improper input validation to execute arbitrary scripts, potentially compromising device integrity and user data within the Samsung Account ecosystem.

Affected Products

• Samsung Account versions prior to 15.5.01.1

Discovery Timeline

• 2025-12-02 - CVE-2025-58486 published to NVD
• 2025-12-03 - Last updated in NVD database

Technical Details for CVE-2025-58486

Vulnerability Analysis

This vulnerability is classified as an Improper Input Validation issue (CWE category). The CVSS 3.1 base score is 5.5 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Key CVSS metrics indicate:

• Attack Vector: Local - requires local access to the target device
• Attack Complexity: Low - exploitation does not require special conditions
• Privileges Required: Low - attacker needs basic user privileges
• User Interaction: None - no victim interaction required
• Integrity Impact: High - complete compromise of data integrity possible
• Confidentiality Impact: None - no direct information disclosure
• Availability Impact: None - no denial of service impact

The EPSS (Exploit Prediction Scoring System) score of 0.031% places this vulnerability in the 8.5th percentile, indicating a relatively low probability of exploitation in the wild.

Root Cause

The root cause of CVE-2025-58486 lies in the Samsung Account application's failure to properly validate and sanitize input data before processing. When user-controlled data is passed to script execution contexts without adequate validation, attackers can inject malicious script content that gets executed within the application's security context.

This type of vulnerability typically occurs when:

• Input boundaries are not properly enforced
• Special characters or escape sequences are not filtered
• Data type validation is missing or incomplete
• Trust boundaries between components are not properly defined

Attack Vector

The attack vector for this vulnerability requires local access to the Android device running the vulnerable Samsung Account application. An attacker with low-level privileges on the device can craft malicious input that bypasses the application's validation mechanisms.

The exploitation flow involves supplying specially crafted input to the Samsung Account application through local interfaces (such as intents, content providers, or shared storage). When this malicious input reaches the vulnerable code path without proper sanitization, the embedded script content is executed within the application's context.

Since no verified proof-of-concept code is publicly available, the specific exploitation technique remains undisclosed. Security researchers and administrators should refer to the Samsung Security Advisory for detailed technical information.

Detection Methods for CVE-2025-58486

Indicators of Compromise

• Unexpected script execution events originating from the Samsung Account application
• Anomalous inter-process communication (IPC) patterns involving the Samsung Account app
• Unusual file system modifications in Samsung Account data directories
• Log entries indicating input validation failures or script injection attempts

Detection Strategies

Organizations should implement multiple detection layers to identify potential exploitation attempts:

Application-Level Monitoring:
Monitor Samsung Account application logs for unusual input patterns, error messages related to input validation, or unexpected script execution events. Android's logcat can capture application-level events that may indicate exploitation attempts.

Behavioral Analysis:
Deploy endpoint detection solutions capable of monitoring Android application behavior. Look for Samsung Account processes spawning unexpected child processes or accessing resources outside their normal operational scope.

SentinelOne Singularity Mobile:
SentinelOne's mobile threat defense capabilities can detect anomalous application behavior patterns indicative of input validation exploitation. The platform monitors inter-application communication and identifies suspicious script execution attempts in real-time.

Monitoring Recommendations

• Enable verbose logging for Samsung Account application where possible
• Monitor device management logs for unauthorized configuration changes
• Implement mobile device management (MDM) solutions with behavioral analytics
• Review Android system logs for unusual activity patterns associated with Samsung Account
• Deploy endpoint protection with mobile threat detection capabilities

How to Mitigate CVE-2025-58486

Immediate Actions Required

• Update Samsung Account to version 15.5.01.1 or later immediately
• Verify all managed Android devices have the latest Samsung Account version installed
• Restrict physical access to devices pending patch deployment
• Monitor for suspicious activity on devices that cannot be immediately patched
• Review and audit Samsung Account permissions on affected devices

Patch Information

Samsung has addressed this vulnerability in Samsung Account version 15.5.01.1. The security patch is available through:

• Samsung Galaxy Store automatic updates
• Manual update via device Settings → Apps → Samsung Account → Update
• Enterprise deployment through MDM solutions

Organizations should prioritize deployment of this update across their managed device fleet. The official Samsung security advisory with complete patch details is available at:
Samsung Security Advisory - December 2025

Workarounds

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

• Restrict device access to trusted users only until patching is complete
• Disable or restrict Samsung Account functionality if not business-critical
• Implement additional access controls through MDM policies
• Monitor affected devices for suspicious behavior using endpoint protection
• Consider temporary isolation of high-risk devices from sensitive resources

Note that these workarounds are temporary measures and do not fully address the vulnerability. Applying the official patch from Samsung remains the recommended remediation approach.