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7.5
CVE-2025-43506: iCloud Private Relay fails when multiple users are logged in on macOS
CVE-2025-43506 · published 10 months ago
Summary
A bug with iCloud Private Relay may cause it to fail when multiple users are logged in at the same time on a MacBook or iMac running macOS Tahoe 26.1. This could make it difficult to use the feature. To fix this issue, update your macOS to the latest version.
What to do
- Update apple macos to version 26.1 or later.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| apple | macos |
< 26.1 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
Original advisory text
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.
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.
References
- https://support.apple.com/en-us/125634 Release Notes Vendor Advisory
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically
- Gives an attacker partial control
Type
CWE-843Type Confusion
Timeline
Published12 Dec 2025
Updated4 Nov 2026
First seen7 Mar 2026
Sources
CVE-2025-43506 · NVD
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