State Issues in macOS - CVE-2026-86868
Published: October 20, 2026
Vulnerability identifier: #VU156231
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-2026-86868
CWE-ID: CWE-371
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to potentially interfere with the intended operation of Heimdal.
The vulnerability exists due to improper state management in the Heimdal component of macOS when managing internal state. A local user can exploit state-management errors to potentially cause the component to behave in unintended ways.
Affected software
macOS
How to mitigate CVE-2026-86868
Install update from vendor's website.
macOS - update to 27.0 26A428