CVE-2025-43506

Name: CVE-2025-43506
Creator: NVD / NIST
Published: 2025-12-12T21:15:55.63+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.41%

Last modified Jun 17, 2026

CVE-2025-43506 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A logic error was addressed with improved error handling. This issue is fixed in macOS Tahoe 26.1. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.41%

33.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-843

Affected Software

Vendor	Product	Versions
Apple	Macos	< 26.1

References

https://support.apple.com/en-us/125634Release Notes, Vendor Advisory

Timeline

Published: Dec 12, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-43506?

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.

How severe is CVE-2025-43506?

CVE-2025-43506 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2025-43506?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-43506?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST