🛡 CVE-2025-52691
SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type Vulnerability
SmarterTools SmarterMail CWE-434
Ransomware use
KNOWN
CISA KEV
EPSS
—
not scored
Added to KEV
2026-01-26
CISA
Remediate by
2026-02-16
⚠ OVERDUE
CWE
CWE-434
weakness
⚠ KEV remediation overdue
CISA required federal remediation by 2026-02-16. This exploited vulnerability is past its Binding Operational Directive 22-01 due date — prioritize patch/mitigation and hunt for exploitation.
📄 Description
SmarterTools SmarterMail contains an unrestricted upload of file with dangerous type vulnerability that could allow an unauthenticated attacker to upload arbitrary files to any location on the mail server, potentially enabling remote code e
🏹 Attributed exploitation
Malware / ransomware (KEV): ransomware (KEV-flagged)
🔗 External references & OSINT
🔄 Internal pivots & actions
🛡 Add to case
🧩 Advanced Capabilities
Workstation · Copilot · AI Skills · Automation · Playbooks · Lookups · Docs · Reports
🤖 AI Copilot
⚡ AI Skills
🔍 Lookup & Enrich
📚 Docs & Reports
💡 Recommendations
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