The vulnerability of the Local Mail Transfer Protocol (LMTP) used by Dovecot and OX Dovecot Pro mail servers, which is related to uncontrolled resource consumption, allows attackers to cause service failures.

The vulnerability of the Local Mail Transfer Protocol LMTP used by Dovecot and OX Dovecot Pro mail servers involves an uncontrolled consumption of resources. Exploiting this vulnerability allows a malicious actor to cause service failures...

PT-2026-28367

Name of the Vulnerable Software and Affected Versions Dovecot versions prior to 2.4.3-1.1 Description A mail message with a large number of RFC 2231 MIME parameters can cause excessive CPU usage in LMTP. A specially crafted message can lead to significant CPU time consumption during mail delivery...

DEBIAN-CVE-2020-25275

Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts...