{"id":"CVE-2023-43000","title":"A use-after-free issue was addressed with improved memory management","summary":"A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to …","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","cwe":["CWE-416"],"vendor":"apple","product":"safari","affected":["safari < 16.6","ipados < 15.8.7","ipados >= 16.0, < 16.6","iphone_os < 15.8.7","iphone_os >= 16.0, < 16.6","macos < 13.5"],"patched":["safari 16.6","ipados 16.6","iphone_os 16.6","macos 13.5"],"published":"2025-11-05","updated":"2026-09-21","sourceUpdated":"2026-09-21T18:17:03.620","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-43000","references":[{"url":"https://support.apple.com/en-us/120324","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/120331","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/120338","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126632","label":"product-security@apple.com"},{"url":"https://cloud.google.com/blog/topics/threat-intelligence/coruna-powerful-ios-exploit-kit","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43000","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","in-the-wild","exploit-available","kev"],"exploited":true,"exploitAvailable":true,"ssvc":{"exploitation":"active","automatable":"no","technicalImpact":"total","timestamp":"2026-03-06T05:01:14.932410Z"},"epss":0.03898,"epssPercentile":0.89812,"kev":true,"kevDateAdded":"2026-03-05","kevDueDate":"2026-03-26","kevRansomware":false,"ingestedAt":"2026-09-21T17:49:53.178Z","slug":"CVE-2023-43000","body":"## Overview\n\nA use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to memory corruption.\n\n## Affected\n\n- `safari < 16.6`\n- `ipados < 15.8.7`\n- `ipados >= 16.0, < 16.6`\n- `iphone_os < 15.8.7`\n- `iphone_os >= 16.0, < 16.6`\n- `macos < 13.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `safari 16.6`\n- `ipados 16.6`\n- `iphone_os 16.6`\n- `macos 13.5`","depth":"abyssal","depthScore":74,"depthScoreParts":{"impact":48.4,"likelihood":0.8,"exploitation":25,"ransomware":0},"changes":[]}