CVE-2022-26723: Apple macOS

Critical severity, CVSS 9.8. EPSS: 1.4% chance of exploitation in the next 30 days.

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Monterey 12.4, macOS Big Sur 11.6.6. Mounting a maliciously crafted Samba network share may lead to arbitrary code execution.

Affected products

• Apple macOS: from 11.0, before 11.6.6 (fixed in 11.6.6); from 12.0, before 12.4 (fixed in 12.4)

Published 2022-05-26. Last modified 2026-06-17.