Detections
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SmarterMail < 100.0.9413 Unrestricted File Upload Remote Code Execution (CVE-2025-52691)

critical Nessus Plugin ID 297222

Synopsis

The remote mail server is affected by a remote code execution vulnerability.

Description

The version of SmarterTools SmarterMail installed on the remote host is prior to 100.0.9413. It is, therefore, affected by a remote code execution vulnerability. SmarterTools SmarterMail contains an unrestricted file upload vulnerability that could allow an unauthenticated attacker to upload arbitrary files to any location on the mail server, potentially enabling remote code execution.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to SmarterTools SmarterMail version 100.0.9413 or later.

See Also

https://www.smartertools.com/smartermail/release-notes/current

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2025-124/

Plugin Details

Severity: Critical

ID: 297222

File Name: smartertools_smartermail_CVE-2025-52691.nasl

Version: 1.1

Type: remote

Family: CGI abuses

Published: 1/30/2026

Updated: 1/30/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 10.0

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2025-52691

CVSS v3

Risk Factor: Critical

Base Score: 10

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Vulnerability Information

CPE: cpe:/a:smartertools:smartermail

Required KB Items: installed_sw/SmarterTools SmarterMail

Patch Publication Date: 10/9/2025

Vulnerability Publication Date: 12/29/2025

CISA Known Exploited Vulnerability Due Dates: 2/16/2026

Reference Information

CVE: CVE-2025-52691