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CVE-2025-43529

Apple Multiple Products Use-After-Free WebKit Vulnerability

Apple Multiple Products
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationExploited in the wildAdded to KEV 15 Dec 2025CISA KEV
Exploit odds (EPSS)8.76%Chance of exploitation activity in the next 30 days, higher than 95% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in26.2Also 18.7.3CVE List
Federal deadline5 Jan 2026Remediation due date for US federal agenciesCISA KEV
CISA 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. CISA KEV

What fixes it

Show all 7 fixed versions

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 15 Dec 2025Added to CISA KEVCISA KEV
  2. 17 Dec 2025, 20:46 UTCPublishedCVE List

Description

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.

Text from CVE List

Affected versions 7

  • Safariaffected: all versions before 26.2CVE List
  • iOS and iPadOSaffected: all versions before 18.7.3CVE List
  • iOS and iPadOSaffected: all versions before 26.2CVE List
  • macOSaffected: all versions before 26.2CVE List
  • tvOSaffected: all versions before 26.2CVE List
  • visionOSaffected: all versions before 26.2CVE List
  • watchOSaffected: all versions before 26.2CVE List

References 9