--- id: CVE-2026-64787 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 Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. Processing ma… 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-416 vendor: apple product: safari affected: - safari < 26.6.1 - ipados < 26.6.1 - iphone_os < 26.6.1 - 'macos >= 26.0, < 26.6.2' patched: - safari 26.6.1 - ipados 26.6.1 - iphone_os 26.6.1 - macos 26.6.2 published: '2026-08-17' updated: '2026-09-14' sourceUpdated: '2026-09-14T21:17:16.393' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64787' references: - url: 'https://support.apple.com/en-us/148281' label: product-security@apple.com - url: 'https://support.apple.com/en-us/148282' label: product-security@apple.com - url: 'https://support.apple.com/en-us/148286' label: product-security@apple.com - url: 'https://support.apple.com/en-us/148287' label: product-security@apple.com - url: 'https://support.apple.com/en-us/149036' 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://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64787.json - url: 'https://access.redhat.com/security/cve/CVE-2026-64787' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2520320' - url: 'https://www.cve.org/CVERecord?id=CVE-2026-64787' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64787' - url: 'https://webkitgtk.org/security/WSA-2026-0005.html' - url: 'https://access.redhat.com/errata/RHSA-2026:58564' - url: 'https://access.redhat.com/errata/RHSA-2026:42088' - url: 'https://access.redhat.com/errata/RHSA-2026:57348' - url: 'https://access.redhat.com/errata/RHSA-2026:59325' - url: 'https://access.redhat.com/errata/RHSA-2026:59326' - url: 'https://access.redhat.com/errata/RHSA-2026:58550' - url: 'https://access.redhat.com/errata/RHSA-2026:54634' - url: 'https://access.redhat.com/errata/RHSA-2026:54572' - url: 'https://access.redhat.com/errata/RHSA-2026:42062' - url: 'https://access.redhat.com/errata/RHSA-2026:69098' tags: - nvd - cve.org - csaf - vex - red-hat - score-dispute epss: 0.00333 epssPercentile: 0.26707 ssvc: exploitation: none automatable: 'no' technicalImpact: partial timestamp: '2026-08-18T13:27:21.753637Z' ingestedAt: '2026-09-14T21:15:17.515Z' scores: nvd: 6.5 vendor: 8.8 --- ## Overview A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to an unexpected process termination. ## Affected - `safari < 26.6.1` - `ipados < 26.6.1` - `iphone_os < 26.6.1` - `macos >= 26.0, < 26.6.2` ## Remediation Upgrade past the affected range: - `safari 26.6.1` - `ipados 26.6.1` - `iphone_os 26.6.1` - `macos 26.6.2` ## Vendor advisories - **RHSA-2026:58564** · Red Hat · fixed in: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58564) - **RHSA-2026:42088** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8) · released 2026-07-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:42088) - **RHSA-2026:57348** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4) · released 2026-08-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:57348) - **RHSA-2026:59325** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6) · released 2026-08-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:59325) - **RHSA-2026:59326** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8) · released 2026-08-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:59326) - **RHSA-2026:58550** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.2) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58550) - **RHSA-2026:54634** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4) · released 2026-08-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:54634) - **RHSA-2026:54572** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6) · released 2026-08-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:54572) - **RHSA-2026:42062** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-07-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:42062) - **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64787.json) - **RHSA-2026:69098** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69098)