CVE-2026-84563 Apple macOS - Denial of Service

Apple macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7 contain a denial of service caused by a logic issue in system checks, letting apps cause unexpected system termination, exploit requires app execution.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.43% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-843

Vendor fix

Update to macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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