Vulnerability in Apple macOS
CVE-2026-28817
A race condition was addressed with improved state handling. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. A sandboxed process may be able to circumvent sandbox restrictions.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (2.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.001 · change: -0.000
Affected products
- Apple macOS — versions 0
Weakness classification (CWE)
References
- support.apple.com/en-us/126794 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/126795 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/126796 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-28817?
- CVE-2026-28817 is a high-severity vulnerability in Apple macOS, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 8.1/10. Published 2026-03-25.
- How severe is CVE-2026-28817?
- High severity. CVSS v3 base score is 8.1 out of 10.