CVE-2026-24423

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) is warning that ransomware actors are exploiting CVE-2026-24423, a critical vulnerability in SmarterMail that allows remote code execution without authentication. SmarterMail is a self-hosted, Windows-based email server and collaboration platform from SmarterTools. The product provides SMTP/IMAP/POP mail services along with webmail, calendars, contacts, and basic groupware functionality. It is commonly […]