CVE-2026-25067

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-25067
SmarterTools SmarterMail versions prior to build 9518 contain an unauthenticated path coercion vulnerability in the background-of-the-day preview endpoint. The application base64-decodes attacker-supplied input and uses it as a filesystem path without validation. On Windows systems, this allows UNC paths to be resolved, causing the SmarterMail service to initiate outbound SMB authentication attempts to attacker-controlled hosts. This can be abused for credential coercion, NTLM relay attacks, and unauthorized network authentication.

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.smartertools.com/smartermail/release-notes/current Release Notes
https://www.vulncheck.com/advisories/smartertools-smartermail-unauthenticated-background-of-the-day-path-coercion Third Party Advisory VDB Entry
Configurations

Configuration 1 (hide)

cpe:2.3:a:smartertools:smartermail:*:*:*:*:*:*:*:*
History

09 Mar 2026, 14:29

Type Values Removed Values Added
Summary
  • (es) Las versiones de SmarterTools SmarterMail anteriores a la compilación 9518 contienen una vulnerabilidad de coerción de ruta no autenticada en el endpoint de vista previa del fondo del día. La aplicación decodifica en base64 la entrada suministrada por el atacante y la utiliza como una ruta del sistema de archivos sin validación. En sistemas Windows, esto permite que las rutas UNC se resuelvan, haciendo que el servicio SmarterMail inicie intentos de autenticación SMB salientes a hosts controlados por el atacante. Esto puede ser abusado para la coerción de credenciales, ataques de retransmisión NTLM y autenticación de red no autorizada.
References () https://www.smartertools.com/smartermail/release-notes/current - () https://www.smartertools.com/smartermail/release-notes/current - Release Notes
References () https://www.vulncheck.com/advisories/smartertools-smartermail-unauthenticated-background-of-the-day-path-coercion - () https://www.vulncheck.com/advisories/smartertools-smartermail-unauthenticated-background-of-the-day-path-coercion - Third Party Advisory, VDB Entry
First Time Smartertools
Smartertools smartermail
CPE cpe:2.3:a:smartertools:smartermail:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.3

29 Jan 2026, 05:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-01-29 05:16

Updated : 2026-03-09 14:29

NVD link : CVE-2026-25067

Mitre link : CVE-2026-25067

CVE.ORG link : CVE-2026-25067

JSON object : View

Products Affected

smartertools

  • smartermail
CWE
CWE-706

Use of Incorrectly-Resolved Name or Reference