Privilege escalation in Apple Macos

CVE-2026-28976

An information leakage was addressed with additional validation. This issue is fixed in macOS Tahoe 26.5. An app may be able to gain root privileges.

Vulnerability class: Information Disclosure

EPSS: 0.000 (13.8th 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)

References

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

Frequently asked questions

What is CVE-2026-28976?: CVE-2026-28976 is a high-severity vulnerability in Apple Macos, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-05-11.
How severe is CVE-2026-28976?: High severity. CVSS v3 base score is 7.5 out of 10.