CVE-2026-86926
CVSS v3
7.8
HIGH
EPSS Score
0.1 %
exploit probability, as of 2026-09-28
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2026-09-23
- Last Modified
- 2026-09-24
Frequently asked questions
What is CVE-2026-86926?
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.
Is CVE-2026-86926 actively exploited?
Active exploitation of CVE-2026-86926 has not been confirmed. Its EPSS score was 0.1% on 2026-09-28, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-86926?
CVE-2026-86926 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2026-86926 affecting your environment?
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