CVE-2025-64086
📋 TL;DR
A NULL pointer dereference vulnerability in PDF-XChange Editor's util.readFileIntoStream component allows attackers to crash the application via specially crafted input, causing Denial of Service. This affects users of PDF-XChange Editor version 10.7.3.401 who open malicious PDF files.
💻 Affected Systems
- PDF-XChange Editor
📦 What is this software?
Pdf Xchange Editor by Pdf Xchange
⚠️ Risk & Real-World Impact
Worst Case
Complete application crash requiring restart, potential data loss if unsaved documents are open, and disruption to business processes relying on PDF viewing/editing.
Likely Case
Application crash when opening a malicious PDF file, requiring user intervention to restart the software and potentially losing unsaved work.
If Mitigated
Minimal impact with proper controls - application crashes but restarts cleanly without system compromise.
🎯 Exploit Status
Attack requires user interaction to open malicious PDF file; no authentication needed for local exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor website for latest version
Vendor Advisory: https://www.pdf-xchange.com/
Restart Required: Yes
Instructions:
1. Visit https://www.pdf-xchange.com/ 2. Download latest version 3. Install over existing installation 4. Restart system if prompted
🔧 Temporary Workarounds
Disable automatic PDF opening
windowsConfigure system to not automatically open PDF files with PDF-XChange Editor
Use alternative PDF viewer
windowsTemporarily use a different PDF application until patched
🧯 If You Can't Patch
- Restrict PDF file sources to trusted locations only
- Implement application whitelisting to prevent unauthorized PDF execution
🔍 How to Verify
Check if Vulnerable:
Check Help > About in PDF-XChange Editor for version 10.7.3.401Check Version:
Not applicable - check via GUI Help > About menuVerify Fix Applied:
Verify version is updated to newer than 10.7.3.401 in Help > About📡 Detection & Monitoring
Log Indicators:
- Application crash logs for PDF-XChange Editor
- Windows Event Logs showing application failures
Network Indicators:
- Unusual PDF file downloads from untrusted sources
SIEM Query:
EventID=1000 OR EventID=1001 AND ProcessName="PDFXEdit.exe"