CVE-2025-43529
Published 2025-12-17 · Updated 2026-10-07 · Source product-security@apple.com
Summary
CVE-2025-43529 is a high-severity (CVSS 8.8) vulnerability in Apple Multiple Products. CISA added it to the Known Exploited Vulnerabilities catalog on December 15, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by January 5, 2026. CISA does not currently list it as used in ransomware campaigns. Apple has 95 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.
All 95 known-exploited Apple vulnerabilities →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.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Apple — Multiple Products
Name: Apple Multiple Products Use-After-Free WebKit Vulnerability
Date added: 2025-12-15 · Due: 2026-01-05
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.
References
- https://support.apple.com/en-us/125884
- https://support.apple.com/en-us/125885
- https://support.apple.com/en-us/125886
- https://support.apple.com/en-us/125889
- https://support.apple.com/en-us/125890
- https://support.apple.com/en-us/125891
- https://support.apple.com/en-us/125892
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43529