Apple fixes macOS Screen Sharing bug exploited for crypto mining

THREAT actors are exploiting a newly patched macOS vulnerability, CVE-2026-65400, which enables remote access to systems via Screen Sharing without valid credentials. This high-severity flaw allows hackers to gain root access and deploy cryptominers. Apple released fixes on August 6, after which active exploitation was reported by the Dutch NCSC. The vulnerability can be triggered easily by naming an account, exposing around 40,000 internet-accessible macOS systems to potential attacks. Additionally, several other vulnerabilities in the same system component were patched recently.