SB2026020614 - NTLM hash disclosure in SmarterTools SmarterMail
Published: February 6, 2026
Security Bulletin ID
SB2026020614
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use of incorrectly-resolved name or reference (CVE-ID: CVE-2026-25067)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a path coercion in the background-of-the-day preview endpoint when the application encodes untrusted input and uses it as a filesystem path without validation. A remote attacker can force the application to initiate outbound SMB authentication attempts to attacker-controlled servers and obtain NTLM hash that can be used later in NTLM relay attacks.
Remediation
Install update from vendor's website.