CVE-2025-52691

SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type Vulnerability

Added to CISA KEV: 2026-01-26

By FixTheVuln Team Sources: CISA KEV Catalog, NVD
CVSS 10.0 — CRITICAL ACTIVE
OWASP: A04 CWE-434

Description

SmarterTools SmarterMail contains an unrestricted upload of file with dangerous type vulnerability that could allow...

Required Action

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

References

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Use the CVSS Calculator to evaluate how this vulnerability affects your specific environment. Consider your network exposure, existing mitigations, and asset criticality.

Frequently Asked Questions

What is CVE-2025-52691?

CVE-2025-52691 (SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type Vulnerability) is a vulnerability with a CVSS score of 10.0 (CRITICAL). SmarterTools SmarterMail contains an unrestricted upload of file with dangerous type vulnerability that could allow...

How do I fix CVE-2025-52691?

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

How severe is CVE-2025-52691?

CVE-2025-52691 has a CVSS score of 10.0, classified as CRITICAL. This vulnerability is in the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been actively exploited in the wild.

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