CVE-2026-86926

Heap Buffer Overflow in FileMaker Server Database Engine Enables Arbitrary Code Execution

Published Sep 23, 2026 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:claris:filemaker_server:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Heap Buffer Overflow in FileMaker Server Database Engine Enables Arbitrary Code Execution
Type Values Removed Values Added
Title Heap Buffer Overflow in FileMaker Server Allowing Arbitrary Code Execution
Weaknesses CWE-119
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-122
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
First Time appeared Claris
Claris filemaker Server
Vendors & Products Claris
Claris filemaker Server
Type Values Removed Values Added
Title Heap Buffer Overflow in FileMaker Server Allowing Arbitrary Code Execution
Weaknesses CWE-119
Type Values Removed Values Added
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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Sep 24, 2026, 2:47 PM
Reserved
Sep 8, 2026, 4:43 PM
Status
Analyzed
Published
Sep 23, 2026, 6:17 PM
Modified
Oct 6, 2026, 1:09 PM