How to secure Exchange Server beyond the CVE-2026-62911 fix
Remote access has always been a core part of how on-premises Exchange works. Users need OWA to read their email from outside the office. Their devices need Autodiscover to set themselves up automatically. Keeping both reachable means keeping Exchange accessible from the Internet, and that opens up more of the server than most organisations realise. CVE-2026-62911 is the latest example. Microsoft released the fix on August 11, 2026.