Memory corruption in macOS - CVE-2026-84566
Published: September 15, 2026
Vulnerability identifier: #VU149781
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84566
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper restriction of operations within the bounds of a memory buffer in the kernel when vulnerable kernel code is executed. A local user can trigger the flaw to escalate privileges on the system.
Affected software
macOS
How to mitigate CVE-2026-84566
Install update from vendor's website.
macOS - addressed in versions 26.7 25G229, 15.8 24H23