A vulnerability categorized as problematic has been discovered in Open-Xchange OX Dovecot Pro up to 2.4.0/3.1.0 . The affected element is an unknown function. Executing a manipulation can lead to improper control of resource identifiers. This vulnerability appears as CVE-2026-33603 . The attacker needs to be present on the local network. There is no available exploit. It is advisable to upgrade the affected component.