CVE-2025-43529
Apple Multiple Products Use-After-Free WebKit Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 5 January 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 25.65% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 15 December 2025 · due 5 January 2026
- Weakness
- CWE-416
- Affected
- apple/safari · apple/ipados · apple/iphone os · apple/macos · apple/tvos · apple/visionos · apple/watchos
- Source
- product-security@apple.com
EPSS moved from 25.7% on 25 October 2026 to 25.7% on 30 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://support.apple.com/en-us/125884 ; https://support.apple.com/en-us/125892 ; https://support.apple.com/en-us/125885 ; https://support.apple.com/en-us/125886 ; https://support.apple.com/en-us/125889 ; https://nvd.nist.gov/vuln/detail/CVE-2025-43529
References
- https://support.apple.com/en-us/125884Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125885Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125886Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125889Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125890Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125891Release Notes, Vendor Advisory
- https://support.apple.com/en-us/125892Release Notes, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43529US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.