CVE-2025-63917Public exploitNetwork attack vector

File disclosure and SSRF via external entities

Published Nov 17, 2025 · Updated Nov 17, 2025

XML external entity injection in PDFPatcher 1.1.3.4663 and earlier allows remote attackers to read local files via crafted bookmark XML. PdfInfoXmlDocument parses user-supplied bookmark XML with XmlDocument while leaving XmlResolver enabled and DTD processing unrestricted. Exploitation requires a user to import the file; external entities can exfiltrate readable files, reach internal URLs, or exhaust parser resources.

CVSS severity7.1
High
EPSS probability0.40%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML external entity injection in PDFPatcher 1.1.3.4663 and earlier allows remote attackers to read local files via crafted bookmark XML. PdfInfoXmlDocument parses user-supplied bookmark XML with XmlDocument while leaving XmlResolver enabled and DTD processing unrestricted. Exploitation requires a user to import the file; external entities can exfiltrate readable files, reach internal URLs, or exhaust parser resources.

The record

CVE
CVE-2025-63917
Published
Nov 17, 2025
Updated
Nov 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-611, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 11, 2026Sep 17, 2026
Latest reporting daySep 17, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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