A security flaw has been identified in Apple’s macOS operating system. This is an improper authentication vulnerability, meaning the system’s standard checks to confirm a user has legitimate login access are not working as intended. The flaw could allow an attacker who is connected to the same local network as a Mac running macOS to access the device’s Screen Sharing feature without needing valid login credentials. If you or your team use Mac computers to manage your website, access hosting account information, or handle other work tasks on the same network, this unauthorized access could let bad actors view sensitive data, make unapproved changes to your systems, or steal information related to your online operations.
Source: CISA Known Exploited Vulnerabilities Catalog — https://nvd.nist.gov/vuln/detail/CVE-2026-65400
