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.
Metrics
Affected Vendors & Products
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Advisories
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Fixes
Solution
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Workaround
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References
History
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 | |
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| Metrics |
cvssV4_0
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Projects
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-01-29T03:38:02.582Z
Reserved: 2026-01-28T21:47:35.119Z
Link: CVE-2026-25067
Vulnrichment
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NVD
Status : Received
Published: 2026-01-29T05:16:13.157
Modified: 2026-01-29T05:16:13.157
Link: CVE-2026-25067
Redhat
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OpenCVE Enrichment
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Weaknesses