CVE-2026-86926CWE-122

CVE-2026-86926

High · published September 23, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
2.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00128 · 2.2th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-09-23T22:17Z
Affected products (1)
ProductVersionsFixed in
claris/filemaker_server< 26.0.326.0.3
References (1)
https://support.claris.com/s/answerview?anum=000049219&language=en_US · [email protected]
EPSS history
Timeline
  • 25 SEP 03:28Z
    EPSS moved — → 0%
    epss
  • 23 SEP 17:20Z
    A heap buffer overflow vulnerability in the FileMaker Server database engine block parsing routine allowed a maliciously crafted .fmp12 database file to cause…
    cvelistv5