CVE WatchOct 7, 2026

CVE-2025-43529

Apple Multiple Products Use-After-Free WebKit Vulnerability

CVSS

8.8

High

EPSS

8.8%

p95

KEV

YES

Dec 15, 2025

Exploit Today

0-100

Published: Dec 17, 2025 · Last modified: Oct 7, 2026 · CWE-416

EPSS · 30d

8.8%EPSS · 30 days8.8%

2026-09-172026-10-15

KEV catalog record

Product

Apple / Multiple Products

Vulnerability

Apple Multiple Products Use-After-Free WebKit Vulnerability

Added to KEV

Dec 15, 2025

Remediate by

Jan 5, 2026

Known ransomware use

Summary 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.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

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

Technical 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.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-1109228.8 HIG

—

———Use after free in Prerender in Google Chrome prior to 155.0.8059.84 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Critical)6h CVE-2026-1109218.8 HIG

—

———Use after free in V8 in Google Chrome prior to 155.0.8059.84 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)6h CVE-2026-1109198.8 HIG

—

———Use after free in Compositing in Google Chrome prior to 155.0.8059.84 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)6h CVE-2026-1084468.8 HIG

—

———Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.7h CVE-2026-1084428.8 HIG

—

———Use after free in Microsoft Office Word allows an unauthorized attacker to execute code over a network.7h