Name: CVE-2025-52691: Unrestricted Upload of File with Dangerous Type
Creator: Rapid7
Published: 2025-12-29T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2025-52691, CWE-434, Exploited in the Wild, CISA KEV Exploit, Metasploit Module, Used with Ransomware, CVSS 10, EPSS 0.85655, CISA KEV

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.

CVSS Details

CVSS 3.1 Base Score: 10
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Smartertools Smartermail	—	Upgrade SmarterTools SmarterMail to the latest version	Jan 28, 2026	Dec 29, 2025

Prioritize with Active Threat Intelligence

With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.

Explore Intelligence Hub

MDR Buyer's Guide

Global Threat Landscape Report

Grow your business

CVSS Details

Covered by Rapid7

Prioritize with Active Threat Intelligence