Risk Letters

Exploited vulnerability

CVE-2025-43529

TLP:CLEAR

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.

Facts

  • Vendor: Apple
  • Product: Multiple Products
  • CVSS: 8.8
  • EPSS (probability of exploitation within 30 days): 25.7 %
  • On CISA's Known Exploited Vulnerabilities list since: 15 December 2025
  • First known exploitation: 15 December 2025
  • CISA's deadline for US federal agencies: 5 January 2026
  • Weakness: CWE-416
  • First seen by Risk Letters: 15 December 2025

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD