BaseFortify

Publication date: 2025-12-12

Last updated on: 2025-12-18

Assigner: Apple Inc.

Description

A logic error was addressed with improved error handling. This issue is fixed in macOS Tahoe 26.1. iCloud Private Relay may not activate when more than one user is logged in at the same time.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-12-12

Last Modified

2025-12-18

Generated

2026-07-06

AI Q&A

2025-12-12

EPSS Evaluated

2026-07-05

NVD

CVE-2025-43506

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos	to 26.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-843	The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Attack-Flow Graph

Executive Summary

This vulnerability is a logic error in macOS Tahoe that affects iCloud Private Relay. Specifically, iCloud Private Relay may fail to activate when more than one user is logged in simultaneously. The issue was addressed by improving error handling and fixed in macOS Tahoe 26.1.

Impact Analysis

If multiple users are logged in at the same time on a macOS Tahoe system, iCloud Private Relay may not activate properly. This could result in reduced privacy protections for network traffic that iCloud Private Relay is designed to provide.

Mitigation Strategies

Update your macOS to version Tahoe 26.1 or later, as this version includes the fix for the issue where iCloud Private Relay may not activate when more than one user is logged in simultaneously.

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