CVE-2025-20922
📋 TL;DR
An out-of-bounds read vulnerability in Samsung Notes allows attackers to read memory beyond intended boundaries when appending text paragraphs. This affects Samsung Notes users on Android devices with versions prior to 4.4.26.71. The vulnerability could potentially leak sensitive information from device memory.
💻 Affected Systems
- Samsung Notes
📦 What is this software?
Notes by Samsung
⚠️ Risk & Real-World Impact
Worst Case
Sensitive data leakage including passwords, authentication tokens, or other application data could be extracted from memory, potentially leading to account compromise or further attacks.
Likely Case
Limited information disclosure of adjacent memory contents, possibly revealing some application data or system information but unlikely to provide direct system control.
If Mitigated
Minimal impact with proper patching; isolated application crash at worst with no data persistence.
🎯 Exploit Status
Requires user interaction to open malicious content within Samsung Notes; exploitation details not publicly disclosed.
🛠️ 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 Google Play Store on Android device. 2. Search for 'Samsung Notes'. 3. If update available, tap 'Update'. 4. Alternatively, enable auto-updates in Play Store settings.
🔧 Temporary Workarounds
Disable Samsung Notes
androidTemporarily disable or uninstall Samsung Notes until patched
Settings > Apps > Samsung Notes > Disable/Uninstall
Use alternative note app
androidSwitch to alternative note-taking application temporarily
🧯 If You Can't Patch
- Restrict Samsung Notes usage to trusted content only
- Implement application whitelisting to prevent unauthorized app execution
🔍 How to Verify
Check if Vulnerable:
Check Samsung Notes version in app settings or Google Play Store; versions below 4.4.26.71 are vulnerable.Check Version:
No command line; check via: Settings > Apps > Samsung Notes > App info > VersionVerify Fix Applied:
Confirm Samsung Notes version is 4.4.26.71 or higher in app settings.📡 Detection & Monitoring
Log Indicators:
- Application crashes of Samsung Notes
- Unusual memory access patterns in system logs
Network Indicators:
- No network indicators for this local vulnerability
SIEM Query:
No specific SIEM query; monitor for Samsung Notes crash reports or abnormal termination events.