CVE-2025-59032: Input Validation
Published Mar 27, 2026
·Updated
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 Software
3 affected components
Dovecot Dovecot ManageSieve
Dovecot dovecot<2.4.3
Open-Xchange Dovecot<3.1.3
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Control access to the ManageSieve port; alternatively disable the ManageSieve service if it is not needed.
Event History
Mar 27, 2026
CVE Published
via MITRE·08:10 AM
Data Sourced
via MITRE·08:10 AM
DescriptionSeverityWeakness
Data Sourced
via Red Hat·09:01 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·09:16 AM
DescriptionSeverityWeaknessAffected Software