Arbitrary File Read and Server Side Request Forgery via XML External Entities in 4D Server SOAP

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Summary

CVECVE-2024-39847
StatePUBLISHED
AssignerSCHUTZWERK
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-30 07:16:36 UTC
Updated2026-04-30 07:16:36 UTC
DescriptionUnauthenticated attackers can exploit a weakness in the XML parser functionality of the SOAP endpoints in 4D server. This allows them to obtain read access to files on the application server and adjacent network shares, and perform HTTP GET requests to arbitrary services.

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from 23637b5d-af4c-4cf9-b8f6-deb7fd0f8423

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:X

Problem Types: CWE-611 | CWE-611 CWE-611 Improper Restriction of XML External Entity Reference

VersionSourceTypeScoreSeverityVector
4.023637b5d-af4c-4cf9-b8f6-deb7fd0f8423Secondary8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/AU:Y

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA 4D 4D Server affected * v20 R3 custom Windows
CNA 4D 4D Server unknown v20 R4 v20 R6 custom Windows
CNA 4D 4D Server unaffected v20 R7 custom Windows

References

ReferenceSourceLinkTags
4d.com 23637b5d-af4c-4cf9-b8f6-deb7fd0f8423 4d.com
www.schutzwerk.com/en/blog/schutzwerk-sa-2024-002 23637b5d-af4c-4cf9-b8f6-deb7fd0f8423 www.schutzwerk.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Marcelo Reyes of SCHUTZWERK GmbH (en)

Additional Advisory Data

SourceTimeEvent
CNA2024-06-17T11:00:00.000ZVulnerability discovered
CNA2024-06-24T11:00:00.000ZAttempt to contact vendor, no response received
CNA2024-06-25T11:00:00.000ZCVE ID requested
CNA2024-06-29T14:59:00.000ZCVE-2024-39847 assigned
CNA2024-07-04T11:00:00.000ZAttempt to contact vendor again, no response received
CNA2024-07-09T11:00:00.000ZAttempt to contact vendor again, no response received
CNA2024-07-16T11:00:00.000ZAttempt to contact vendor again, no response received
CNA2024-07-22T11:00:00.000ZAttempt to contact vendor again, no response received
CNA2026-04-29T11:00:00.000ZAdvisory published

Solutions

CNA: Update to 4D Server 20 R7 or higher.

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