Hmailserver Exploit Github _verified_

Have you discovered a new HmailServer vulnerability? Submit a responsible disclosure via the official HmailServer GitHub repository or contact the maintainers directly.

Table_title: New CVE Received from MITRE 7/21/2025 12:15:30 PM Table_content: header: | Action | Type | New Value | row: | Action: National Institute of Standards and Technology (.gov) hmailserver exploit github

The phrase represents a double-edged sword. For defenders, it is a free vulnerability database and a testing toolkit. For attackers, it is a shortcut to compromising your mail server. Have you discovered a new HmailServer vulnerability

: While technically a Microsoft Outlook vulnerability, hMailServer is often used as the backend mail server in labs to demonstrate this "critical" bug. Attackers can use scripts like Xaitax's PoC to bypass SPF/DKIM/DMARC checks and send malicious emails that leak NTLM hashes or achieve remote code execution. For defenders, it is a free vulnerability database

To prevent exploitation, users and administrators can implement the following measures: