{"id":"CVE-2026-84531","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 iOS 27 and iPadOS 27, macOS Golden Gate 27. Processing maliciously crafted NTLM input may lead to unexpected app termination.","severity":"medium","cvss":6.2,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-787"],"vendor":"apple","product":"ipados","affected":["ipados < 27.0","iphone_os < 27.0","macos < 27.0"],"patched":["ipados 27.0","iphone_os 27.0","macos 27.0"],"published":"2026-09-14","updated":"2026-09-18","sourceUpdated":"2026-09-18T17:22:07.960","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84531","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"}],"tags":["nvd","cve.org"],"epss":0.00122,"epssPercentile":0.02237,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-17T15:36:19.426466Z"},"ingestedAt":"2026-09-14T21:15:17.528Z","slug":"CVE-2026-84531","body":"## Overview\n\nAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27. Processing maliciously crafted NTLM input may lead to unexpected app termination.\n\n## Affected\n\n- `ipados < 27.0`\n- `iphone_os < 27.0`\n- `macos < 27.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `ipados 27.0`\n- `iphone_os 27.0`\n- `macos 27.0`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":34.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":206208,"id":"CVE-2026-84531","ts":1789662143161,"field":"cvss","old":null,"new":"6.2"},{"seq":206207,"id":"CVE-2026-84531","ts":1789662143161,"field":"severity","old":"none","new":"medium"}]}