CVE-2025-4044
📋 TL;DR
This XXE vulnerability in Lexmark printer drivers allows attackers to read sensitive files from Windows systems and exfiltrate them to arbitrary URLs. Organizations using affected Lexmark printer drivers on Windows are vulnerable to data theft.
💻 Affected Systems
- Lexmark printer drivers for Windows
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of sensitive files including credentials, configuration files, and system data, with exfiltration to attacker-controlled servers.
Likely Case
Theft of printer configuration files, network credentials, and local system files accessible to the printer driver process.
If Mitigated
Limited file access restricted by process permissions and network egress controls.
🎯 Exploit Status
Requires ability to send malicious XML to the printer driver interface. Typically requires network access to printer management interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Lexmark security advisory for specific patched driver versions
Vendor Advisory: https://www.lexmark.com/en_us/solutions/security/lexmark-security-advisories.html
Restart Required: Yes
Instructions:
1. Visit Lexmark security advisory page. 2. Identify affected printer models. 3. Download and install updated printer drivers. 4. Restart affected systems.
🔧 Temporary Workarounds
Disable XML external entity processing
windowsConfigure printer drivers to disable XXE processing if supported
Network segmentation
allIsolate printer management interfaces from untrusted networks
🧯 If You Can't Patch
- Restrict network access to printer management interfaces using firewall rules
- Monitor for unusual outbound connections from printer driver processes
🔍 How to Verify
Check if Vulnerable:
Check installed Lexmark printer driver versions against advisory. Use: Get-PrinterDriver -Name '*Lexmark*' in PowerShellCheck Version:
Get-PrinterDriver -Name '*Lexmark*' | Select-Object Name, DriverVersionVerify Fix Applied:
Verify driver version matches patched version from Lexmark advisory and test XXE functionality📡 Detection & Monitoring
Log Indicators:
- Unusual XML parsing errors in printer logs
- Printer driver process making unexpected outbound connections
Network Indicators:
- HTTP/HTTPS requests from printer driver processes to unusual external domains
- XML payloads sent to printer management interfaces
SIEM Query:
source="printer_logs" AND ("XML parse error" OR "external entity") OR dest_ip=printer_ip AND protocol=http AND content="<!ENTITY"