🛡️ CVE-2026-25067
🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-706 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE CWE-706
Public Exploit ✅ No
Source NVD
Published 2026-01-29
Updated 2026-06-02
Modified 2026-03-09
Fix URL N/A

Affected Packages

Software From version Fixed in
smartermail — 100.0.9518

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