CVE-2025-63917

7.1 highEPSS 0.4%

High (7.1) in cnblogs pdfpatcher. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.1 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)
CWE: CWE-611
Published: 2025-11-17
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cnblogs:pdfpatcher

References

https://github.com/cydtseng/Vulnerability-Research/blob/main/pdfpatcher/XXE-Importers.md
https://github.com/wmjordan/PDFPatcher
https://www.cnblogs.com/pdfpatcher

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