CVE-2026-86930: 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. in Claris FileMaker Server
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.
AI Analysis
Technical Summary
This vulnerability in Claris FileMaker Server for Linux involves an out-of-bounds read triggered when a specially crafted image file is uploaded to a container field. During the thumbnail generation process in FileMaker WebDirect, this flaw allows an attacker to read process memory, potentially exposing sensitive information. The issue is resolved in FileMaker Server version 26.0.3.
Potential Impact
An attacker who can upload a malicious image file to a container field in FileMaker Server for Linux can exploit this vulnerability to read process memory during thumbnail generation in FileMaker WebDirect. This could lead to disclosure of sensitive information from the server's memory.
Mitigation Recommendations
Upgrade FileMaker Server for Linux to version 26.0.3 or later, where this vulnerability is addressed. No other mitigation is indicated by the vendor advisory.
CVE-2026-86930: 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. in Claris FileMaker Server
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.
Affected software
Claris
FileMaker Server
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Claris FileMaker Server for Linux involves an out-of-bounds read triggered when a specially crafted image file is uploaded to a container field. During the thumbnail generation process in FileMaker WebDirect, this flaw allows an attacker to read process memory, potentially exposing sensitive information. The issue is resolved in FileMaker Server version 26.0.3.
Potential Impact
An attacker who can upload a malicious image file to a container field in FileMaker Server for Linux can exploit this vulnerability to read process memory during thumbnail generation in FileMaker WebDirect. This could lead to disclosure of sensitive information from the server's memory.
Mitigation Recommendations
Upgrade FileMaker Server for Linux to version 26.0.3 or later, where this vulnerability is addressed. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-09-08T16:43:41.879Z
- State
- PUBLISHED
Threat ID: 6ab40d59f7a7c541061aeba6
Added to database: 09/23/2026, 17:33:13 UTC
Last enriched: 09/23/2026, 17:47:46 UTC
Last updated: 09/24/2026, 01:57:04 UTC
Views: 8
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