CVE-2025-47220Network attack vector

File enumeration via unrestricted signature image paths

Published Nov 13, 2025 · Updated Dec 17, 2025

Local file enumeration in Keyfactor SignServer before 7.3.2 allows remote authenticated users to confirm server-side file existence. The PDFSigner and PAdESSigner accept an unrestricted VISIBLE_SIGNATURE_CUSTOM_IMAGE_PATH and return an error when the path resolves to a readable, non-image file. SignServer administrator access is required, and the oracle discloses existence rather than file contents.

CVSS severity5.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Local file enumeration in Keyfactor SignServer before 7.3.2 allows remote authenticated users to confirm server-side file existence. The PDFSigner and PAdESSigner accept an unrestricted VISIBLE_SIGNATURE_CUSTOM_IMAGE_PATH and return an error when the path resolves to a readable, non-image file. SignServer administrator access is required, and the oracle discloses existence rather than file contents.

The record

CVE
CVE-2025-47220
Published
Nov 13, 2025
Updated
Dec 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1083
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1083File and Directory Discovery

Public exploit references

No public exploit references are available in this record.

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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