Apple Multiple Products Use-After-Free WebKit Vulnerability
Apple — Safari
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.
8.8
8.9%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- Dec 17, 2025
- Modified
- Sep 21, 2026
- Added to KEV
- Dec 15, 2025
- Federal patch due
- Jan 5, 2026
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2025-43529, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2025-43529 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2025-43529?
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.
How severe is CVE-2025-43529?
CVE-2025-43529 has a CVSS base score of 8.8 out of 10 (CVSS 3.1).
Is CVE-2025-43529 actively exploited in the wild?
Yes. CVE-2025-43529 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Dec 15, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-43529?
8.9% - meaning FIRST.org's EPSS model estimates a 8.9% probability this vulnerability will be exploited in the wild within 30 days (95% percentile among all scored CVEs).
What type of vulnerability is CVE-2025-43529?
CVE-2025-43529 is classified under CWE-416 (CWE-416 Use After Free).
Cross-checked against
Impactr finds and proves whether CVE-2025-43529 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.