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CVE-2026-25067
SmarterTools SmarterMail vulnerability analysis and mitigation

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.


SourceNVD

Related SmarterTools SmarterMail vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-52691CRITICAL10
  • SmarterTools SmarterMailSmarterTools SmarterMail
  • cpe:2.3:a:smartertools:smartermail
YesYesDec 29, 2025
CVE-2026-24423CRITICAL9.3
  • SmarterTools SmarterMailSmarterTools SmarterMail
  • cpe:2.3:a:smartertools:smartermail
YesYesJan 23, 2026
CVE-2026-23760CRITICAL9.3
  • SmarterTools SmarterMailSmarterTools SmarterMail
  • cpe:2.3:a:smartertools:smartermail
YesYesJan 22, 2026
CVE-2026-26930HIGH7.2
  • SmarterTools SmarterMailSmarterTools SmarterMail
  • cpe:2.3:a:smartertools:smartermail
NoYesFeb 16, 2026
CVE-2026-25067MEDIUM6.9
  • SmarterTools SmarterMailSmarterTools SmarterMail
  • cpe:2.3:a:smartertools:smartermail
NoYesJan 29, 2026

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