CVE-2025-20928
📋 TL;DR
This vulnerability allows local attackers to read memory outside the intended buffer when Samsung Notes parses WBMP image files. Attackers could potentially access sensitive information from adjacent memory locations. Only users with Samsung Notes versions below 4.4.26.71 on Samsung mobile devices are affected.
💻 Affected Systems
- Samsung Notes
📦 What is this software?
Notes by Samsung
⚠️ Risk & Real-World Impact
Worst Case
An attacker could read sensitive data from adjacent memory, potentially exposing authentication tokens, passwords, or other application secrets stored in memory.
Likely Case
Information disclosure of non-critical application data or crash of Samsung Notes application.
If Mitigated
Limited impact with proper application sandboxing and memory protection mechanisms in place.
🎯 Exploit Status
Requires local access and user interaction to open malicious file. No known public exploits at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.4.26.71
Vendor Advisory: https://security.samsungmobile.com/serviceWeb.smsb?year=2025&month=03
Restart Required: No
Instructions:
1. Open Samsung Galaxy Store or Google Play Store on your Samsung device. 2. Search for 'Samsung Notes'. 3. If update is available, tap 'Update'. 4. Alternatively, go to Settings > Apps > Samsung Notes > App details in store > Update.
🔧 Temporary Workarounds
Disable automatic image loading
androidPrevent automatic parsing of WBMP images in Samsung Notes
Use alternative note-taking apps
androidTemporarily use different note applications until patch is applied
🧯 If You Can't Patch
- Restrict user permissions to prevent execution of untrusted applications
- Implement application whitelisting to control which apps can run
🔍 How to Verify
Check if Vulnerable:
Open Samsung Notes app, go to Settings > About Samsung Notes, check version number. If version is below 4.4.26.71, device is vulnerable.Check Version:
No command line option. Check via app settings: Settings > Apps > Samsung Notes > App infoVerify Fix Applied:
After updating, verify Samsung Notes version is 4.4.26.71 or higher in Settings > About Samsung Notes.📡 Detection & Monitoring
Log Indicators:
- Samsung Notes crash logs
- Memory access violation errors in system logs
Network Indicators:
- No network indicators - local vulnerability only
SIEM Query:
No specific SIEM query available as this is a local application vulnerability