CVE-2026-28891
HIGHCVSS 8.1/10EPSS 0.14%
Last modified
CVE-2026-28891 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. A race condition was addressed with additional validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
A race condition was addressed with additional 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.
Metrics
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Macos | >= 14.0, < 14.8.5 |
| Apple | Macos | >= 15.0, < 15.7.5 |
| Apple | Macos | >= 26.0, < 26.4 |
References
- https://support.apple.com/en-us/126794Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126795Release Notes, Vendor Advisory
- https://support.apple.com/en-us/126796Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-28891?
A race condition was addressed with additional 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.
How severe is CVE-2026-28891?
CVE-2026-28891 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2026-28891?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-28891?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST