{"id":"CVE-2026-86926","title":"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","summary":"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 vulne…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-122"],"vendor":"claris","product":"filemaker_server","affected":["filemaker_server < 26.0.3"],"patched":["filemaker_server 26.0.3"],"published":"2026-09-23","updated":"2026-10-06","sourceUpdated":"2026-10-06T13:09:34.440","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86926","references":[{"url":"https://support.claris.com/s/answerview?anum=000049219&language=en_US","label":"product-security@apple.com"}],"tags":["nvd","cve.org"],"epss":0.00128,"epssPercentile":0.02409,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-24T14:47:07.003686Z"},"ingestedAt":"2026-09-23T17:28:14.861Z","slug":"CVE-2026-86926","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `filemaker_server < 26.0.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `filemaker_server 26.0.3`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":210190,"id":"CVE-2026-86926","ts":1790264795085,"field":"cvss","old":null,"new":"7.8"},{"seq":210189,"id":"CVE-2026-86926","ts":1790264795085,"field":"severity","old":"none","new":"high"}]}