CVE-2025-59032

ManageSieve AUTHENTICATE command crashes when using literal as SASL initial response. This can be used to crash ManageSieve service repeatedly, making it unavailable for other users. Control access to ManageSieve port, or disable the service if it's not needed. Alternatively upgrade to a fixed version. No publicly available exploits are known.

Affected products

Dovecot, Linuxmint, Red Os, Rocky Linux, Ubuntu

Dovecot

< 2.4.3

Open-xchange Dovecot

< 3.1.3

Fix

Available

CVSS 3.1

7.5 HIGH

EPSS

0.7% (51th percentile)

Weakness

CWE-229, CWE-20

NVD status

Modified

Published

2026-03-27