CVE-2024-25584: Open-Xchange GmbH Ox Dovecot Pro

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Dovecot accepts dot LF DOT LF symbol as end of DATA command. RFC requires that it should always be CR LF DOT CR LF. This causes Dovecot to convert single mail with LF DOT LF in middle, into two emails when relaying to SMTP. Dovecot will split mail with LF DOT LF into two mails. Upgrade to latest released version. No publicly available exploits are known.

Affected products

• Open-Xchange GmbH Ox Dovecot Pro: up to and including 2.3.21

Published 2024-09-06. Last modified 2026-06-17.