---
id: CVE-2025-43457
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 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1,
  visionOS 26.1, watchOS 26.1. 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-416
  - CWE-416
vendor: apple
product: safari
affected:
  - safari < 26.1
  - ipados < 26.1
  - iphone_os < 26.1
  - visionos < 26.1
  - watchos < 26.1
patched:
  - safari 26.1
  - ipados 26.1
  - iphone_os 26.1
  - visionos 26.1
  - watchos 26.1
published: '2025-11-04'
updated: '2026-06-30'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-43457'
references:
  - url: 'https://support.apple.com/en-us/125632'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125634'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125638'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125639'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125640'
    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-2025-43457'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2448786'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-43457.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
epss: 0.00572
epssPercentile: 0.44973
ingestedAt: '2026-06-30T13:26:50.155Z'
---

## Overview

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1. Processing maliciously crafted web content may lead to an unexpected Safari crash.

## Affected

- `safari < 26.1`
- `ipados < 26.1`
- `iphone_os < 26.1`
- `visionos < 26.1`
- `watchos < 26.1`

## Remediation

Upgrade past the affected range:

- `safari 26.1`
- `ipados 26.1`
- `iphone_os 26.1`
- `visionos 26.1`
- `watchos 26.1`