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CRITICAL

CVE-2026-86930

CVSS v3

9.1

CRITICAL

EPSS Score

0.3 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-09-23
Last Modified
2026-09-24

Frequently asked questions

What is 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. This vulnerability is addressed in FileMaker Server version 26.0.3.

Is CVE-2026-86930 actively exploited?

Active exploitation of CVE-2026-86930 has not been confirmed. Its EPSS score was 0.3% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-86930?

CVE-2026-86930 has a CVSS v3 base score of 9.1 (CRITICAL severity).

Is CVE-2026-86930 affecting your environment?

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