CVE-2025-64085
📋 TL;DR
A NULL pointer dereference vulnerability in PDF-XChange Editor v10.7.3.401 allows attackers to crash the application via specially crafted PDF files, causing denial of service. This affects users who open untrusted PDF documents with the vulnerable software version.
💻 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 work is open, and disruption to business processes relying on PDF viewing/editing.
Likely Case
Application crash when opening malicious PDF files, requiring user intervention to restart the software and potentially losing unsaved work.
If Mitigated
No impact if proper controls prevent opening untrusted PDFs or if software is patched.
🎯 Exploit Status
Exploitation requires user to open a crafted PDF file; no authentication or special privileges needed beyond file access.
🛠️ 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 and install the latest version of PDF-XChange Editor
3. Restart the application and any related services.
🔧 Temporary Workarounds
Restrict PDF file sources
allOnly open PDF files from trusted sources; implement policies to block untrusted PDFs.
Use alternative PDF viewer
windowsTemporarily use a different PDF viewer until patched.
🧯 If You Can't Patch
- Implement application whitelisting to restrict PDF-XChange Editor execution
- Deploy endpoint protection to detect and block malicious PDF files
🔍 How to Verify
Check if Vulnerable:
Check PDF-XChange Editor version in Help > About; if version is 10.7.3.401, it is vulnerable.Check Version:
Not applicable for GUI application; use Help > About menu.Verify Fix Applied:
After updating, verify version is no longer 10.7.3.401 in Help > About.📡 Detection & Monitoring
Log Indicators:
- Application crash logs from 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 SourceName="PDF-XChange Editor"