CVE-2025-43529

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.

CVSS v3.1 Score

8.8

HIGH

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

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: Dec 15, 2025 Remediation due: Jan 5, 2026

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
apple	safari	< 26.2
apple	ipados	< 18.7.3
apple	ipados	26.0 — 26.2
apple	iphone_os	< 18.7.3
apple	iphone_os	26.0 — 26.2
apple	macos	26.0 — 26.2
apple	tvos	< 26.2
apple	visionos	< 26.2
apple	watchos	< 26.2

References

Advisories & Patches

https://support.apple.com/en-us/125884 https://support.apple.com/en-us/125885 https://support.apple.com/en-us/125886 https://support.apple.com/en-us/125889 https://support.apple.com/en-us/125890 https://support.apple.com/en-us/125891 https://support.apple.com/en-us/125892

Other References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43529

Frequently Asked Questions

What is CVE-2025-43529? +

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. It has a CVSS v3.1 base score of 8.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2025-43529? +

CVE-2025-43529 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-43529? +

CVE-2025-43529 affects products from apple, specifically: ipados, iphone_os, macos, safari, tvos, visionos, watchos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-43529? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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