Recently, Apple promptly rolled out a security update to tackle a high-severity zero-day vulnerability in macOS. This vulnerability, designated as CVE-2026-65400, enables attackers to directly compromise Mac devices via the network, bypassing the need for a valid login password. On the Common Vulnerability Scoring System (CVSS), which rates vulnerabilities on a scale from 0 to 10, it has received a score of 9.8, marking it as an exceptionally critical threat.