What is CVE-2026-28830?

CVE-2026-28830 is a medium-severity vulnerability in Apple Macos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.7/10. Published 2026-05-11.

How severe is CVE-2026-28830?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Apple Macos

CVE-2026-28830

A race condition was addressed with additional validation. This issue is fixed in macOS Tahoe 26.4. An app may be able to access sensitive user data.

Vulnerability class: Race Condition

EPSS: 0.000 (1.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Apple Macos — versions 0

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

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

Frequently asked questions

What is CVE-2026-28830?: CVE-2026-28830 is a medium-severity vulnerability in Apple Macos, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 4.7/10. Published 2026-05-11.
How severe is CVE-2026-28830?: Medium severity. CVSS v3 base score is 4.7 out of 10.