CVE-2026-20976
📋 TL;DR
An improper input validation vulnerability in Galaxy Store allows local attackers to execute arbitrary scripts on affected devices. This affects Samsung Galaxy devices running Galaxy Store versions prior to 4.6.02. Attackers must have local access to the device to exploit this vulnerability.
💻 Affected Systems
- Samsung Galaxy Store
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Local attacker gains arbitrary code execution with the privileges of the Galaxy Store application, potentially leading to data theft, privilege escalation, or device compromise.
Likely Case
Local attacker executes malicious scripts to access sensitive data within Galaxy Store's sandbox or perform unauthorized actions.
If Mitigated
With proper access controls and updated software, the vulnerability is eliminated and no exploitation is possible.
🎯 Exploit Status
Exploitation requires local access and knowledge of the vulnerability. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.6.02
Vendor Advisory: https://security.samsungmobile.com/serviceWeb.smsb?year=2026&month=01
Restart Required: No
Instructions:
1. Open Galaxy Store app. 2. Go to Settings > About Galaxy Store. 3. Check for updates. 4. Install version 4.6.02 or later. 5. Alternatively, update through Samsung's app update mechanism.
🔧 Temporary Workarounds
Disable Galaxy Store
androidTemporarily disable the Galaxy Store application to prevent exploitation
adb shell pm disable-user --user 0 com.sec.android.app.samsungapps
Restrict Local Access
allImplement device access controls to prevent unauthorized local access
🧯 If You Can't Patch
- Implement strict device access controls and monitoring
- Use application whitelisting to restrict unauthorized script execution
🔍 How to Verify
Check if Vulnerable:
Check Galaxy Store version in Settings > Apps > Galaxy Store > App infoCheck Version:
adb shell dumpsys package com.sec.android.app.samsungapps | grep versionNameVerify Fix Applied:
Confirm Galaxy Store version is 4.6.02 or higher📡 Detection & Monitoring
Log Indicators:
- Unusual Galaxy Store process activity
- Unexpected script execution events
- Permission escalation attempts
Network Indicators:
- Unusual outbound connections from Galaxy Store process
SIEM Query:
process_name:"Galaxy Store" AND event_type:"script_execution"