CVE-2025-63917

HighCVSS 7.1

Published: 17/11/2025(UTC)Updated: 05/11/2026(UTC)Translated: 05/11/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.43%

37th percentile - higher than 37% of all known CVEs

Summary

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, 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.

Risk Assessment

An attacker could read arbitrary files from the victim's filesystem, exfiltrate sensitive data via OOB HTTP requests, perform SSRF attacks against internal network resources, or cause a denial of service. This poses a significant threat to confidentiality and availability.

Recommendation

Update PDFPatcher to a version later than 1.1.3.4663 if available, or disable external entity resolution in the XmlDocument configuration. Avoid importing untrusted XML files.

Other vulnerabilities in PDFPatcher

CVE-2025-63918Medium
The PDFPatcher executable does not validate user-supplied file paths, allowing directory traversal attacks that let attackers upload arbitrary files to arbitrary locations.

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS