CVE-2024-25584

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-09-06 · updated 2026-06-17
Weakness: CWE-345

Description

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: through 2.3.21

References

https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2024/oxdc-adv-2024-0001.json

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