CVE-2026-24423

SmarterTools SmarterMail versions prior to build 9511 contain an unauthenticated remote code execution vulnerability in the ConnectToHub API method. The attacker could point the SmarterMail to the malicious HTTP server, which serves the malicious OS command. This command will be executed by the vulnerable application.

Credits

Sina Kheirkhah & Piotr Bazydlo of watchTowr
Markus Wulftange of CODE WHITE GmbH
Cale Black of VulnCheck

References