CVE-2023-42920

Local code execution via dylib hijacking

Published Mar 19, 2024 · Updated Mar 26, 2025

Uncontrolled library loading in Claris FileMaker Pro before 20.2 allows local users to execute code through dylib hijacking on macOS. Claris has not published which application component or search path permits an attacker-controlled dynamic library to load. Exploitation requires local low-privileged access and runs attacker code with the privileges of the FileMaker Pro process.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled library loading in Claris FileMaker Pro before 20.2 allows local users to execute code through dylib hijacking on macOS. Claris has not published which application component or search path permits an attacker-controlled dynamic library to load. Exploitation requires local low-privileged access and runs attacker code with the privileges of the FileMaker Pro process.

The record

CVE
CVE-2023-42920
Published
Mar 19, 2024
Updated
Mar 26, 2025
Vendor
Claris
Product
FileMaker Pro
Classifications
CWE-427, T1574.006
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 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?

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

  1. Affected versionversion=0 <20.2
  2. Affected versionversion=unspecified <20.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Claris · FileMaker Proversion=0 <20.2; version=unspecified <20.2

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1574.006Dynamic Linker 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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