8000+ SmarterMail Hosts Vulnerable to RCE Attack – PoC Exploit Released

Over 8,000 internet-exposed SmarterMail servers remain vulnerable to a critical remote code execution flaw tracked as CVE-2025-52691, according to scans conducted on January 12, 2026. Security researchers identified 8,001 unique IP addresses likely affected out of 18,783 exposed instances, with proof-of-concept exploits now publicly available. This maximum-severity vulnerability poses severe risks to organizations relying on […]

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