Path Traversal in Apple macOS
CVE-2026-28827
A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to break out of its sandbox.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (10.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001
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-2026-28827?
- CVE-2026-28827 is a critical-severity vulnerability in Apple macOS, classified under Path Traversal. CVSS score: 9.3/10. Published 2026-03-25.
- How severe is CVE-2026-28827?
- Critical severity. CVSS v3 base score is 9.3 out of 10.