What’s Vulnerable › Vulnerabilities
CVE-2026-86926
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-23 · updated 2026-10-06
- Weakness: CWE-122
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.
Affected products
- Claris FileMaker Server: before 26.0.3 — fixed in 26.0.3
How to fix
Upgrade to a fixed version: Claris FileMaker Server 26.0.3. Check the vendor advisory for mitigations.
References
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