CVE Catalog

Actively exploited in the wild

SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type Vulnerability

SmarterTools - SmarterMail · Listed in the CISA KEV since 2026-01-26. This indicates confirmed attacks in production environments.

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CVE-2025-52691

CriticalCVSS 10.0KEV
Published: Translated: NVD NIST

Summary

Successful exploitation of the vulnerability could allow an unauthenticated attacker to upload arbitrary files to any location on the mail server, potentially enabling remote code execution.

Risk Assessment

An attacker could achieve remote code execution on the mail server, potentially leading to full compromise of the system and data.

Recommendation

Apply patches provided by the vendor and monitor mail server logs for suspicious activities.

Related vulnerabilities

Original NVD description (English source)

Successful exploitation of the vulnerability could allow an unauthenticated attacker to upload arbitrary files to any location on the mail server, potentially enabling remote code execution.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS