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CRITICAL · 9.8

CVE-2025-43526

This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac with Lockdown Mode enabled, web content opened via a file URL may be able to use W...

Vulnerability Description

This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac with Lockdown Mode enabled, web content opened via a file URL may be able to use Web APIs that should be restricted.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
AppleSafari< 26.2
AppleMacos< 26.2

Related Weaknesses (CWE)

CWE-601

References

FAQ

What is CVE-2025-43526?

CVE-2025-43526 is a vulnerability with a CVSS score of 9.8 (CRITICAL). This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac with Lockdown Mode enabled, web content opened via a file URL may be able to use W...

How severe is CVE-2025-43526?

CVE-2025-43526 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-43526?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Safari, Apple Macos.