Improper access control in macOS - CVE-2026-84579
Published: October 20, 2026
Vulnerability identifier: #VU156227
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84579
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to potentially gain unauthorized access to protected resources.
The vulnerability exists due to improper access control in the DesktopServices component of Apple macOS when enforcing access restrictions. A remote attacker can attempt operations that should be restricted to potentially bypass access controls and access protected resources.
Affected software
macOS
How to mitigate CVE-2026-84579
Install update from vendor's website.
macOS - update to 27.0 26A428