Memory corruption in macOS - CVE-2026-84571
Published: September 15, 2026
Vulnerability identifier: #VU149877
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84571
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local application to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in CoreUI. A local application can trick the victim into opening a specially crafted file and perform unexpected app termination.
Affected software
macOS
Apple iOS
iPadOS
Apple iOS
iPadOS
How to mitigate CVE-2026-84571
Install update from vendor's website.
macOS - update to 27.0 26A428
Apple iOS - addressed in versions 27.0 24A427, 27.0 24A437
iPadOS - update to 27.0 24A437
Apple iOS - addressed in versions 27.0 24A427, 27.0 24A437
iPadOS - update to 27.0 24A437