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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

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

No history.

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

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