CVE-2025-43529

high-risk

Published 2025-12-17

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.

Do I need to act?

0.15% chance of exploitation

EPSS score — low exploit probability

CISA KEV: actively exploited in the wild

On the Known Exploited Vulnerabilities catalog — federal agencies must patch

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.8/10 High

NETWORK / LOW complexity

Affected Products (7)

Safari

Ipados

Iphone Os

Macos

Tvos

Visionos

Watchos

Affected Vendors

Apple

References (8)

Release Notes https://support.apple.com/en-us/125884

Release Notes https://support.apple.com/en-us/125885

Release Notes https://support.apple.com/en-us/125886

Release Notes https://support.apple.com/en-us/125889

Release Notes https://support.apple.com/en-us/125890

Release Notes https://support.apple.com/en-us/125891

Release Notes https://support.apple.com/en-us/125892

US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-...

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high-risk

Severity 30/34 · Critical

Exploitability 8/34 · Low

Exposure 14/34 · Moderate