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.

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History

Thu, 29 Jan 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 29 Jan 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Smartertools
Smartertools smartermail
Vendors & Products Smartertools
Smartertools smartermail

Thu, 29 Jan 2026 04:30:00 +0000

Type Values Removed Values Added
Description 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.
Title SmarterTools SmarterMail < Build 9518 Unauthenticated background-of-the-day Path Coercion
Weaknesses CWE-706
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-01-29T17:51:55.414Z

Reserved: 2026-01-28T21:47:35.119Z

Link: CVE-2026-25067

cve-icon Vulnrichment

Updated: 2026-01-29T17:51:44.801Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-29T05:16:13.157

Modified: 2026-01-29T16:31:00.867

Link: CVE-2026-25067

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-01-29T09:08:21Z

Weaknesses