CVE-2025-63917
PDFPatcher thru 1.1.3.4663 executable's XML bookmark import functionality does not restrict XML external entity (XXE) references.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L
- EPSS
- 0.40% probability · 33th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-611
- Affected
- cnblogs/pdfpatcher
- Source
- cve@mitre.org
References
- https://github.com/cydtseng/Vulnerability-Research/blob/main/pdfpatcher/XXE-Importers.mdExploit, Third Party Advisory
- https://github.com/wmjordan/PDFPatcherProduct
- https://www.cnblogs.com/pdfpatcherProduct
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.