CVE-2025-55313
📋 TL;DR
This vulnerability in Foxit PDF software allows arbitrary code execution when processing malicious PDF files. Attackers can exploit memory corruption by manipulating form field properties via JavaScript. Users of affected Foxit versions on Windows and macOS are at risk.
💻 Affected Systems
- Foxit PDF Reader
- Foxit PDF Editor
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the victim's computer, enabling data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Malware installation leading to data exfiltration, credential theft, or system disruption through crafted PDF files delivered via phishing.
If Mitigated
Limited impact with proper security controls, potentially resulting in application crash but no code execution due to memory protections.
🎯 Exploit Status
Exploitation requires user interaction to open malicious PDF but no authentication. Memory corruption vulnerabilities in PDF readers are commonly weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 13.2 or 2025.2
Vendor Advisory: https://www.foxit.com/support/security-bulletins.html
Restart Required: Yes
Instructions:
1. Open Foxit software
2. Navigate to Help > Check for Updates
3. Follow prompts to install version 13.2 or 2025.2
4. Restart computer after installation
🔧 Temporary Workarounds
Disable JavaScript in Foxit
allPrevents exploitation by disabling JavaScript execution in PDF files
Open Foxit > File > Preferences > JavaScript > Uncheck 'Enable JavaScript'
Use alternative PDF viewer
allTemporarily use different PDF software until patched
🧯 If You Can't Patch
- Block PDF files from untrusted sources at email gateways and web proxies
- Implement application whitelisting to prevent unauthorized executables
🔍 How to Verify
Check if Vulnerable:
Check Foxit version in Help > About. If version is below 13.2 (for older versions) or below 2025.2 (for 2025 versions), system is vulnerable.Check Version:
On Windows: wmic product where name="Foxit" get version
On macOS: /Applications/Foxit*.app/Contents/Info.plist | grep -A1 CFBundleVersionVerify Fix Applied:
Confirm version shows 13.2 or higher, or 2025.2 or higher in Help > About.📡 Detection & Monitoring
Log Indicators:
- Foxit process crashes with memory access violations
- Unusual JavaScript execution in PDF files
- Large memory allocation failures in application logs
Network Indicators:
- PDF downloads from suspicious sources
- Unusual outbound connections after PDF opening
SIEM Query:
process_name:"Foxit*.exe" AND (event_id:1000 OR event_id:1001) OR file_extension:".pdf" AND process_name:"Foxit*"