---
id: CVE-2025-43529
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 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and
  iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2.
  Processing malici…
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 < 26.2
  - ipados < 18.7.3
  - 'ipados >= 26.0, < 26.2'
  - iphone_os < 18.7.3
  - 'iphone_os >= 26.0, < 26.2'
  - 'macos >= 26.0, < 26.2'
  - tvos < 26.2
  - visionos < 26.2
  - watchos < 26.2
patched:
  - safari 26.2
  - ipados 26.2
  - iphone_os 26.2
  - macos 26.2
  - tvos 26.2
  - visionos 26.2
  - watchos 26.2
published: '2025-12-17'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T11:10:00.153'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-43529'
references:
  - url: 'https://support.apple.com/en-us/125884'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125885'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125886'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125889'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125890'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125891'
    label: product-security@apple.com
  - url: 'https://support.apple.com/en-us/125892'
    label: product-security@apple.com
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43529
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
  - cve.org
epss: 0.2565
epssPercentile: 0.97951
kev: true
kevDateAdded: '2025-12-15'
kevDueDate: '2026-01-05'
kevRansomware: false
exploited: true
exploits:
  github: 7
  githubRepos:
    - 'https://github.com/0xjohnnydev/WebKit-UAF-ANGLE-OOB-Analysis'
    - 'https://github.com/jir4vv1t/CVE-2025-43529'
    - 'https://github.com/GenericCoding/pois0nSword'
  checkedAt: '2026-10-27T16:46:50.760Z'
exploitAvailable: true
zeroDay: true
ssvc:
  exploitation: active
  automatable: 'no'
  technicalImpact: total
  timestamp: '2025-12-18T04:55:16.426232Z'
ingestedAt: '2026-09-21T17:49:53.185Z'
---

## Overview

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 was also issued in response to this report.

## Affected

- `safari < 26.2`
- `ipados < 18.7.3`
- `ipados >= 26.0, < 26.2`
- `iphone_os < 18.7.3`
- `iphone_os >= 26.0, < 26.2`
- `macos >= 26.0, < 26.2`
- `tvos < 26.2`
- `visionos < 26.2`
- `watchos < 26.2`

## Remediation

Upgrade past the affected range:

- `safari 26.2`
- `ipados 26.2`
- `iphone_os 26.2`
- `macos 26.2`
- `tvos 26.2`
- `visionos 26.2`
- `watchos 26.2`