CVE-2020-25275: Debian Linux

High severity, CVSS 7.5. EPSS: 4.7% chance of exploitation in the next 30 days.

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.

Affected products

• Debian Debian Linux: version 10.0 only
• Dovecot Dovecot: before 2.3.13 (fixed in 2.3.13)
• Fedoraproject Fedora: version 32 only

Published 2021-01-04. Last modified 2026-06-17.