CVE-2025-14401
📋 TL;DR
CVE-2025-14401 is an out-of-bounds read vulnerability in PDFsam Enhanced that can lead to remote code execution when users open malicious PDF files or visit malicious web pages. Attackers can exploit this to execute arbitrary code with the privileges of the current user. All users of affected PDFsam Enhanced versions are vulnerable.
💻 Affected Systems
- PDFsam Enhanced
📦 What is this software?
Enhanced by Pdfsam
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the user running PDFsam Enhanced, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Local privilege escalation leading to user account compromise, data exfiltration, or malware installation.
If Mitigated
Limited impact if application runs with minimal privileges, sandboxed, or network-restricted.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious PDF). The vulnerability is in the App object handling component.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific version
Vendor Advisory: https://www.zerodayinitiative.com/advisories/ZDI-25-1089/
Restart Required: Yes
Instructions:
1. Visit the PDFsam Enhanced official website or update mechanism
2. Download and install the latest patched version
3. Restart the application
4. Verify the update was successful
🔧 Temporary Workarounds
Disable PDFsam Enhanced as default PDF handler
allPrevent automatic opening of PDF files with PDFsam Enhanced
Run with reduced privileges
allRun PDFsam Enhanced with limited user permissions
🧯 If You Can't Patch
- Implement application whitelisting to block PDFsam Enhanced execution
- Use network segmentation to isolate systems running vulnerable versions
🔍 How to Verify
Check if Vulnerable:
Check PDFsam Enhanced version against vendor advisory. Versions prior to the patched release are vulnerable.Check Version:
Check Help > About in PDFsam Enhanced GUI or run 'pdfsam-enhanced --version' in terminalVerify Fix Applied:
Verify installed version matches or exceeds the patched version specified in vendor advisory.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation from PDFsam Enhanced
- Memory access violations in application logs
- Crash reports from PDFsam Enhanced
Network Indicators:
- Unexpected outbound connections from PDFsam Enhanced process
- Downloads of PDF files followed by suspicious process execution
SIEM Query:
Process creation where parent process contains 'pdfsam' AND (command line contains suspicious patterns OR destination IP is known malicious)