CVE-2026-28821
HIGHCVSS 8.4/10EPSS 0.21%
Last modified
CVE-2026-28821 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. 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 gain elevated privileges.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/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
- Modified
Frequently Asked Questions
What is CVE-2026-28821?
A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. 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 gain elevated privileges.
How severe is CVE-2026-28821?
CVE-2026-28821 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-28821?
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-2026-28821?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST