CVE-2026-86926
Undergoing Analysis Undergoing Analysis - In Progress

Heap Buffer Overflow in FileMaker Server

Publication date: 2026-09-23

Last updated on: 2026-09-23

Assigner: Apple Inc.

Description
A heap buffer overflow vulnerability in the FileMaker Server database engine block parsing routine allowed a maliciously crafted .fmp12 database file to cause memory corruption, potentially leading to arbitrary code execution. This vulnerability is addressed in FileMaker Server version 26.0.3.

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Meta Information

Published
2026-09-23
Last Modified
2026-09-23
Generated
2026-09-23
AI Q&A
2026-09-23
EPSS Evaluated
N/A
NVD
CVE-2026-86926
EUVD
EUVD-2026-85429

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
filemaker filemaker_server 26.0.3

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a heap buffer overflow vulnerability in FileMaker Server's database engine. It occurs when parsing .fmp12 files, allowing a specially crafted file to corrupt memory and potentially execute arbitrary code.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your system by tricking you into opening a specially crafted .fmp12 file. This could lead to data theft, system damage, or unauthorized access.

Mitigation Strategies

Update FileMaker Server to version 26.0.3 or later to address the heap buffer overflow vulnerability in the database engine block parsing routine.

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