Improper access control in macOS - CVE-2026-43779
Published: August 17, 2026
Vulnerability identifier: #VU143769
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-43779
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to gain unauthorized access.
The vulnerability exists due to improper access control in Screen Sharing Server when handling requests from a local application. A local user can interact with the vulnerable component to gain unauthorized access.
Affected software
macOS
How to mitigate CVE-2026-43779
Install update from vendor's website.
macOS - addressed in versions 26.6 25G72, 14.8.8 23J620, 15.7.8 24G824