{"id":"CVE-2026-20644","title":"The issue was addressed with improved memory handling","summary":"The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. Processing maliciously crafted web content may lead to an…","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-119","CWE-416","CWE-787","CWE-120"],"vendor":"apple","product":"safari","affected":["safari < 26.3","ipados < 18.7.5","ipados >= 26.0, < 26.3","iphone_os < 18.7.5","iphone_os >= 26.0, < 26.3","macos < 26.3","visionos < 26.3"],"patched":["safari 26.3","ipados 26.3","iphone_os 26.3","macos 26.3","visionos 26.3"],"published":"2026-02-11","updated":"2026-06-30","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-20644","references":[{"url":"https://support.apple.com/en-us/126346","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126347","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126348","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126353","label":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126354","label":"product-security@apple.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:10702","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:11329","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:11814","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:13845","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:14659","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:16056","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:16695","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:19206","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:19535","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:22136","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:9692","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-20644","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2448792","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20644.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"tags":["nvd"],"epss":0.00306,"epssPercentile":0.23556,"ingestedAt":"2026-07-03T18:53:52.406Z","slug":"CVE-2026-20644","body":"## Overview\n\nThe issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.\n\n## Affected\n\n- `safari < 26.3`\n- `ipados < 18.7.5`\n- `ipados >= 26.0, < 26.3`\n- `iphone_os < 18.7.5`\n- `iphone_os >= 26.0, < 26.3`\n- `macos < 26.3`\n- `visionos < 26.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `safari 26.3`\n- `ipados 26.3`\n- `iphone_os 26.3`\n- `macos 26.3`\n- `visionos 26.3`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}