Update your Mac: Screen Sharing vulnerability exploited in the wild

The Dutch National Cyber Security Centre warned of incidents where a vulnerability in Apple’s Screen Sharing feature (CVE-2026-65400) was exploited to install Monero cryptominers. This authentication-bypass flaw, which allows remote attackers network access without valid credentials, was patched by Apple on August 6 across multiple macOS versions. Users are advised that the primary defense is installing the update and disabling Screen Sharing.