Improper access control in macOS - CVE-2026-84578
Published: September 15, 2026
Vulnerability identifier: #VU149817
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84578
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local application to escalate privileges on the system.
The vulnerability exists due to improper access restrictions in quarantine. A local application can break out of its sandbox.
Affected software
macOS
How to mitigate CVE-2026-84578
Install update from vendor's website.
macOS - addressed in versions 26.7 25G229, 15.8 24H23