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CVE-2025-43529

Apple Multiple Products Use-After-Free WebKit Vulnerability

  • High 8.8
  • Exploited: added to CISA KEV 15 Dec 2025

Description

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.

Key facts

Published
17 Dec 2025
Last changed
21 Sep 2026
Assigned by
apple
KEV added
15 Dec 2025
KEV fix due
5 Jan 2026
EPSS
25.65% likely to be exploited in the next 30 days, higher than 97.993% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 8.8CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What to do

  • Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
AppleSafari
  • 0 up to but excluding 26.2 (affected)
AppleiOS and iPadOS
  • 0 up to but excluding 18.7.3 (affected)
  • 0 up to but excluding 26.2 (affected)
ApplemacOS
  • 0 up to but excluding 26.2 (affected)
AppletvOS
  • 0 up to but excluding 26.2 (affected)
ApplevisionOS
  • 0 up to but excluding 26.2 (affected)
ApplewatchOS
  • 0 up to but excluding 26.2 (affected)

Timeline

  1. 15 Dec 2025 Added to the CISA KEV catalogue
  2. 17 Dec 2025 Published

Weakness

Related coverage

References