Vulnerability Description
PDFPatcher thru 1.1.3.4663 executable's XML bookmark import functionality does not restrict XML external entity (XXE) references. The application uses .NET's XmlDocument class without disabling external entity resolution, enabling attackers to: Read arbitrary files from the victim's filesystem, exfiltrate sensitive data via out-of-band (OOB) HTTP requests, perform SSRF attacks against internal network resources, or cause a denial of service via entity expansion attacks.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cnblogs | Pdfpatcher | <= 1.1.3.4663 |
Related Weaknesses (CWE)
References
- https://github.com/cydtseng/Vulnerability-Research/blob/main/pdfpatcher/XXE-ImpoExploitThird Party Advisory
- https://github.com/wmjordan/PDFPatcherProduct
- https://www.cnblogs.com/pdfpatcherProduct
FAQ
What is CVE-2025-63917?
CVE-2025-63917 is a vulnerability with a CVSS score of 7.1 (HIGH). PDFPatcher thru 1.1.3.4663 executable's XML bookmark import functionality does not restrict XML external entity (XXE) references. The application uses .NET's XmlDocument class without disabling extern...
How severe is CVE-2025-63917?
CVE-2025-63917 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-63917?
Check the references section above for vendor advisories and patch information. Affected products include: Cnblogs Pdfpatcher.