Secure Cyber Vulnerability Management

13/11/2026
Zero-Day Initiative

ZDI-26-997: SmarterTools SmarterMail Insufficient Entropy Authentication Bypass Vulnerability

by Deepanshu Jha
This vulnerability allows remote attackers to bypass authentication on affected installations of SmarterTools SmarterMail. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.1. The following CVEs are assigned: CVE-2026-126969.

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