{"id":"CVE-2026-86929","title":"An out-of-bounds write issue was addressed with improved bounds checking","summary":"An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted file may lead to arbitrary code execution.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvssSource":"adp","vendor":"Apple","product":"macOS","affected":["macOS < 15.8.2","macOS < 26.7.2","macOS < 27"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-26T00:00:00+00:00"},"published":"2026-10-26","updated":"2026-10-27","sourceUpdated":"2026-10-27T03:56:16.360Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-86929","references":[{"url":"https://support.apple.com/en-us/149035"},{"url":"https://support.apple.com/en-us/149522"},{"url":"https://support.apple.com/en-us/149523"}],"tags":["cve.org"],"epss":0.00653,"epssPercentile":0.51087,"ingestedAt":"2026-10-27T16:11:59.214Z","slug":"CVE-2026-86929","body":"## Overview\n\nAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8.2, macOS Tahoe 26.7.2. Processing a maliciously crafted file may lead to arbitrary code execution.\n\n## Affected\n\n- `macOS < 15.8.2`\n- `macOS < 26.7.2`\n- `macOS < 27`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}