Hmailserver Exploit | Github

Exploiting older versions of OpenSSL or insecure hashing algorithms (like SHA1) that the software still relies on.

Advanced attack chains combine multiple vulnerabilities. In documented penetration tests, after compromising hMailServer, attackers exploited CVE-2023-2255 in LibreOffice (installed on the same system) to achieve command execution. Malicious ODT files were generated using online PoC exploits and triggered when opened by scheduled tasks running as privileged users. hmailserver exploit github