Joo Antunes

**Name of the Vulnerable Software and Affected Versions** Softalk Mail Server version 8.5.1.431 **Description** The issue allows remote authenticated users to cause a denial of service, resulting in resource consumption and daemon crash, by sending a long IMAP APPEND command with certain repeated parameters to the IMAP server. **Recommendations** For Softalk Mail Server version 8.5.1.431, consider restricting access to the IMAP APPEND command until a patch is available to prevent potential denial of service attacks.

**Name of the Vulnerable Software and Affected Versions** hMailServer version 4.4.1 **Description** The issue allows remote authenticated users to cause a denial of service, potentially leading to resource exhaustion or a daemon crash, by sending a long series of IMAP commands to the IMAP server. **Recommendations** For hMailServer version 4.4.1, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** NoticeWare Email Server NG versions 4.6.3 and earlier **Description** The issue allows remote attackers to cause a denial of service, resulting in a daemon crash. This is achieved by sending multiple long LOGIN commands to the IMAP server. **Recommendations** For versions 4.6.3 and earlier, consider restricting access to the IMAP server or limiting the length of LOGIN commands as a temporary workaround until a patch is available.