CVE-2023-4770

Arbitrary code execution via shfolder.dll replacement

Published Nov 30, 2023 · Updated Aug 2, 2024

DLL hijacking in 4D and 4D Server 19 R8 build 100218 for Windows allows local users to execute arbitrary code. The executables load x64 shfolder.dll from their installation path without restricting resolution to a trusted system location. A high-privileged local user must replace the DLL, and another user must launch the affected executable; the DLL then runs in that process's context.

CVSS severity6.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DLL hijacking in 4D and 4D Server 19 R8 build 100218 for Windows allows local users to execute arbitrary code. The executables load x64 shfolder.dll from their installation path without restricting resolution to a trusted system location. A high-privileged local user must replace the DLL, and another user must launch the affected executable; the DLL then runs in that process's context.

The record

CVE
CVE-2023-4770
Published
Nov 30, 2023
Updated
Aug 2, 2024
Vendor
4D
Product
4D
Classifications
CWE-427, T1574.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Nov 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=19 R8 100218

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

4D · 4Dversion=19 R8 100218
4D · 4D Serverversion=19 R8 100218

Published CVSS scores

6.5Spanish National Cybersecurity Institute, S.A. (INCIBE)CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
7.8National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1574.001Hijack Execution Flow: DLL Search Order Hijacking

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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