CVE-2025-43529

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Summary

CVECVE-2025-43529
StatePUBLISHED
Assignerapple
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-17 21:16:11 UTC
Updated2026-04-02 19:21:00 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.001250000 probability, percentile 0.316550000 (date 2026-04-01)

CISA KEV: Listed on 2025-12-15; due 2026-01-05; ransomware use Unknown

Problem Types: CWE-416 | 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. | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 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

CISA Known Exploited Vulnerability

VendorApple
ProductMultiple Products
NameApple Multiple Products Use-After-Free WebKit Vulnerability
Required ActionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Noteshttps://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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Ipados All All All All
Application Apple Safari All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apple Safari affected 26.2 custom Not specified
CNA Apple IOS And IPadOS affected 18.7.3 custom Not specified
CNA Apple IOS And IPadOS affected 26.2 custom Not specified
CNA Apple MacOS affected 26.2 custom Not specified
CNA Apple TvOS affected 26.2 custom Not specified
CNA Apple VisionOS affected 26.2 custom Not specified
CNA Apple WatchOS affected 26.2 custom Not specified

References

ReferenceSourceLinkTags
support.apple.com/en-us/125889 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125892 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125884 [email protected] support.apple.com Release Notes, Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
support.apple.com/en-us/125886 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125890 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125891 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/125885 [email protected] support.apple.com Release Notes, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev
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