{"id":"CVE-2026-86870","title":"A heap buffer overflow was addressed with improved bounds checking","summary":"A heap buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27, watchOS 27. Processing a maliciously crafted file may lead to u…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-122"],"vendor":"apple","product":"ipados","affected":["ipados < 26.7","iphone_os < 26.7","macos < 27.0","visionos < 27.0","watchos < 27.0"],"patched":["ipados 26.7","iphone_os 26.7","macos 27.0","visionos 27.0","watchos 27.0"],"published":"2026-09-14","updated":"2026-09-18","sourceUpdated":"2026-09-18T15:54:15.470","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86870","references":[{"url":"https://support.apple.com/en-us/149034","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/149035","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/149037","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/149038","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/149041","label":"product-security@apple.com"}],"tags":["nvd","cve.org"],"epss":0.00336,"epssPercentile":0.27057,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-17T16:18:25.583184Z"},"ingestedAt":"2026-09-14T21:15:17.500Z","slug":"CVE-2026-86870","body":"## Overview\n\nA heap buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, visionOS 27, watchOS 27. Processing a maliciously crafted file may lead to unexpected app termination.\n\n## Affected\n\n- `ipados < 26.7`\n- `iphone_os < 26.7`\n- `macos < 27.0`\n- `visionos < 27.0`\n- `watchos < 27.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `ipados 26.7`\n- `iphone_os 26.7`\n- `macos 27.0`\n- `visionos 27.0`\n- `watchos 27.0`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":206456,"id":"CVE-2026-86870","ts":1789665846479,"field":"cvss","old":null,"new":"6.5"},{"seq":206455,"id":"CVE-2026-86870","ts":1789665846479,"field":"severity","old":"none","new":"medium"}]}