Vulnerabilities4 min read
SEPPMail Gateway Flaws Enable Complete Mail System Takeover
Seven vulnerabilities including CVE-2026-2743 (CVSS 10.0) allow unauthenticated attackers to compromise SEPPMail secure email gateways, read all traffic, and establish persistent access. Patch to 15.0.4 immediately.
Marcus ChenMay 20, 2026