What is CVE-2025-43506?

CVE-2025-43506 is a high-severity vulnerability in Apple Macos, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 7.5/10. Published 2025-12-12.

How severe is CVE-2025-43506?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apple Macos

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.

EPSS: 0.004 (33.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apple Macos — versions 0

Weakness classification (CWE)

CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

References

product-security@apple.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2025-43506?: CVE-2025-43506 is a high-severity vulnerability in Apple Macos, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 7.5/10. Published 2025-12-12.
How severe is CVE-2025-43506?: High severity. CVSS v3 base score is 7.5 out of 10.