Over 6,000 SmarterMail Servers Exposed to Critical Vulnerability

Over 6,000 SmarterMail Servers Exposed to Critical Vulnerability

First seen 27 Jan 2026, 22:53 UTC •Securityaffairs.CoSecurityaffairs •20.3

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Shadowserver researchers identified over 6,000 SmarterMail servers exposed online, likely vulnerable to a critical authentication bypass flaw tracked as CVE-2026-23760. The vulnerability was disclosed by cybersecurity firm watchTowr on January 8, 2026.

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