---
id: CVE-2026-64718
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, Safari 27, iOS 26.6 and iPadOS 26.6, iOS 26.7
  and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Tahoe 26.6,
  tvOS 2…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/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
  - ipados < 26.6
  - iphone_os < 26.6
  - 'macos >= 26.0, < 26.6'
  - tvos < 26.6
  - visionos < 26.6
  - watchos < 26.6
patched:
  - safari 26.6
  - ipados 26.6
  - iphone_os 26.6
  - macos 26.6
  - tvos 26.6
  - visionos 26.6
  - watchos 26.6
published: '2026-07-27'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T21:17:14.467'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64718'
references:
  - url: 'https://support.apple.com/en-us/128066'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/128067'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/128068'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/128069'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/128070'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/128073'
    label: product-security@apple.com
  - 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/149038'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/149039'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/149041'
    label: product-security@apple.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64718.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-64718'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2524568'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-64718'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-64718'
  - url: 'https://access.redhat.com/errata/RHSA-2026:69098'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00211
epssPercentile: 0.10089
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-28T18:37:58.327178Z'
ingestedAt: '2026-09-14T21:15:17.555Z'
scores:
  nvd: 5.5
  vendor: 8.8
---

## Overview

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6, Safari 27, iOS 26.6 and iPadOS 26.6, iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6, visionOS 27, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected Safari crash.

## Affected

- `safari < 26.6`
- `ipados < 26.6`
- `iphone_os < 26.6`
- `macos >= 26.0, < 26.6`
- `tvos < 26.6`
- `visionos < 26.6`
- `watchos < 26.6`

## Remediation

Upgrade past the affected range:

- `safari 26.6`
- `ipados 26.6`
- `iphone_os 26.6`
- `macos 26.6`
- `tvos 26.6`
- `visionos 26.6`
- `watchos 26.6`

## Vendor advisories

- **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)
- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64718.json)