Protection mechanism failure in macOS - CVE-2026-65399
Published: September 15, 2026
Vulnerability identifier: #VU149851
CSH Severity: Low
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-65399
CWE-ID: CWE-693
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to insufficient implementation of security measures in copyfile when copying data from an archive. A local user can bypass a file quarantine and bypass implemented security restrictions.
Affected software
macOS
How to mitigate CVE-2026-65399
Install updates from vendor's website.
macOS - addressed in versions 26.7 25G229, 15.8 24H23