What is CVE-2025-43278?

CVE-2025-43278 is a medium-severity vulnerability in Apple Macos, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 5.5/10. Published 2026-06-11.

How severe is CVE-2025-43278?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Apple Macos

CVE-2025-43278

This issue was addressed with improved handling of symlinks. This issue is fixed in macOS Sequoia 15.4. An app may be able to access protected user data.

EPSS: 0.002 (4.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Apple Macos — versions 0

Weakness classification (CWE)

CWE-61 — UNIX Symbolic Link (Symlink) Following

References

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

Frequently asked questions

What is CVE-2025-43278?: CVE-2025-43278 is a medium-severity vulnerability in Apple Macos, classified under UNIX Symbolic Link (Symlink) Following. CVSS score: 5.5/10. Published 2026-06-11.
How severe is CVE-2025-43278?: Medium severity. CVSS v3 base score is 5.5 out of 10.