---
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'
cvssSource: adp
vendor: Apple
product: Safari
affected:
  - Safari < 26.2
  - ios_and_ipados < 18.7.3
  - ios_and_ipados < 26.2
  - macOS < 26.2
  - tvOS < 26.2
  - visionOS < 26.2
  - watchOS < 26.2
ssvc:
  exploitation: active
  automatable: 'no'
  technicalImpact: total
  timestamp: '2025-12-18T04:55:16.426232Z'
exploited: true
exploitAvailable: true
published: '2025-12-17'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T16:46:54.698Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2025-43529'
references:
  - url: 'https://support.apple.com/en-us/125884'
  - url: 'https://support.apple.com/en-us/125885'
  - url: 'https://support.apple.com/en-us/125886'
  - url: 'https://support.apple.com/en-us/125889'
  - url: 'https://support.apple.com/en-us/125890'
  - url: 'https://support.apple.com/en-us/125891'
  - url: 'https://support.apple.com/en-us/125892'
tags:
  - cve.org
  - in-the-wild
  - exploit-available
  - kev
epss: 0.08763
epssPercentile: 0.94934
kev: true
kevDateAdded: '2025-12-15'
kevDueDate: '2026-01-05'
kevRansomware: false
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: '2026-09-24T07:52:53.421Z'
zeroDay: true
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`
- `ios_and_ipados < 18.7.3`
- `ios_and_ipados < 26.2`
- `macOS < 26.2`
- `tvOS < 26.2`
- `visionOS < 26.2`
- `watchOS < 26.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.