CVE-2026-86938

Administrator code execution via installer DLL hijacking

Published Sep 23, 2026 · Updated Sep 23, 2026

DLL hijacking in the Windows installer for Claris FileMaker Pro before 26.0.3 allows local users to execute code as administrator. The installer loads a malicious DLL placed in its directory instead of restricting library resolution to a trusted system location. Exploitation requires local filesystem access and an administrator to run the affected installer, after which the DLL executes with elevated privileges.

CVSS severityUnavailable
Unscored
EPSS probability0.10%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DLL hijacking in the Windows installer for Claris FileMaker Pro before 26.0.3 allows local users to execute code as administrator. The installer loads a malicious DLL placed in its directory instead of restricting library resolution to a trusted system location. Exploitation requires local filesystem access and an administrator to run the affected installer, after which the DLL executes with elevated privileges.

The record

CVE
CVE-2026-86938
Published
Sep 23, 2026
Updated
Sep 23, 2026
Vendor
Claris
Product
FileMaker Pro
Classifications
T1574.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 2026Record 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 <26.0.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Claris · FileMaker Proversion=0 <26.0.3

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1574.002DLL Side-Loading

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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