#VU124722 Improper input validation in Dovecot and OX Dovecot Pro - CVE-2025-59032

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Main Vulnerability Database Vulnerabilities #VU124722

#VU124722 Improper input validation in Dovecot and OX Dovecot Pro - CVE-2025-59032

Published: April 1, 2026


Vulnerability identifier: #VU124722
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-59032
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Dovecot
OX Dovecot Pro
Software vendor:
Dovecot

Description

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in Pigeonhole ManageSieve service when processing SASL AUTHENTICATE command. A remote attacker can send a specially crafted request using literal as SASL initial response to cause a denial of service.

The ManageSieve service crashes and becomes unavailable for other users.


Remediation

Install security update from vendor's website.

External links