CVE-2026-86930

Out‑of‑Bounds Read in FileMaker Server Leading to Process Memory Disclosure

Published Sep 23, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Description
An out-of-bounds read vulnerability in FileMaker Server for Linux allowed an attacker uploading a specially crafted image file to a container field to disclose process memory during thumbnail generation in FileMaker WebDirect. 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 Out‑of‑Bounds Read in FileMaker Server Leading to Process Memory Disclosure
Type Values Removed Values Added
Title Out‑of‑Bounds Read Disclosure During Thumbnail Generation in FileMaker Server
Weaknesses CWE-200
CWE-788
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-125
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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 Out‑of‑Bounds Read Disclosure During Thumbnail Generation in FileMaker Server
Weaknesses CWE-200
CWE-788
Type Values Removed Values Added
Description An out-of-bounds read vulnerability in FileMaker Server for Linux allowed an attacker uploading a specially crafted image file to a container field to disclose process memory during thumbnail generation in FileMaker WebDirect. This vulnerability is addressed in FileMaker Server version 26.0.3.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Sep 24, 2026, 2:50 PM
Reserved
Sep 8, 2026, 4:43 PM
Status
Analyzed
Published
Sep 23, 2026, 6:17 PM
Modified
Oct 5, 2026, 6:18 PM