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Critical Vulnerability in SmarterMail Allows Remote Code Execution

First seen 30 Dec 2025, 15:17 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

SmarterTools has issued an urgent security advisory for a critical vulnerability in SmarterMail, tracked as CVE-2025-52691. This flaw enables attackers to execute remote code on affected mail servers, posing a significant risk to organizations utilizing the software. The vulnerability has a CVSS score of 10.0, indicating the highest severity level.

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