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High severity · published Dec 17, 2025
CVE-2025-43529
Apple Multiple Products Use-After-Free WebKit Vulnerability
In wildKEV
8.8
CVSS
25.6%
EPSS
Yes
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)25.6% · higher than 98% of CVEs
Exploited in the wildYes
CISA KEVListed Dec 15, 2025
Federal remediation dueJan 5, 2026
Ransomware campaign useNot known
Affected products
Which versions
MA
macOS · Apple
before 26.2 · source: vendor, NVD
IO
iOS · Apple
before 18.7.3; 26.0 before 26.2 · source: NVD
SA
Safari · Apple
before 26.2 · source: vendor, NVD
IA
iOS and iPadOS · Apple
before 18.7.3; before 26.2 · source: vendor
TV
tvOS · Apple
before 26.2 · source: vendor, NVD
VI
visionOS · Apple
before 26.2 · source: vendor, NVD
WA
watchOS · Apple
before 26.2 · source: vendor, NVD
MP
Multiple Products · Apple
All versions, or not specified · source: KEV
In the news
VulnerabilityHigh
[CISA KEV] CVE-2025-43529: Apple Multiple Products - Apple Multiple Products Use-After-Free WebKit Vulnerability
Apple iOS, iPadOS, macOS, and other Apple products contain a use-after-free vulnerability in WebKit. Processing maliciously crafted web content may lead to memory corruption. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
MPMultiple ProductsCVE-2025-43529
Dec 15, 2025·CISA KEV
Affected product
MA
macOS
Apple
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-43529
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-43529
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
support.apple.com
https://support.apple.com/en-us/125884
support.apple.com
https://support.apple.com/en-us/125885
support.apple.com
https://support.apple.com/en-us/125886
support.apple.com
https://support.apple.com/en-us/125889
support.apple.com
https://support.apple.com/en-us/125890
support.apple.com
https://support.apple.com/en-us/125891
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