CVE-2025-52691

Published Dec 29, 2025

Last updated 3 months ago

Exploit known CVSS critical 10.0

SmarterMail

Server

SMTP

Overview

Description: 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.
Source: 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4
NVD status: Analyzed
Products: smartermail

Risk scores

CVSS 3.1

Type: Secondary
Base score: 10
Impact score: 6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Severity: CRITICAL

Known exploits

Data from CISA

Vulnerability name: SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type Vulnerability
Exploit added on: Jan 26, 2026
Exploit action due: Feb 16, 2026
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.

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-434

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:smartertools:smartermail:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "A9F4301A-C277-47F6-841D-386EDD24EE67",
            "versionEndExcluding": "100.0.9413",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Known exploits

Weaknesses

Social media

Configurations

Related CVEs

References