CVE-2026-25067 (GCVE-0-2026-25067)

Vulnerability from cvelistv5 – Published: 2026-01-29 03:38 – Updated: 2026-01-29 17:51
VLAI?
Title
SmarterTools SmarterMail < Build 9518 Unauthenticated background-of-the-day Path Coercion
Summary
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.
Severity ?
6.9 (Medium)
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
CWE
  • CWE-706 - Use of Incorrectly-Resolved Name or Reference
Assigner
References
Impacted products
Vendor Product Version
SmarterTools SmarterMail Affected: 0 , < 100.0.9518 (semver)
Create a notification for this product.
Credits
Cale Black of VulnCheck
Show details on NVD website
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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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