SB2026012223 - Authentication bypass and remote code execution in SmarterTools SmarterMail

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Main Vulnerability Database SB2026012223

SB2026012223 - Authentication bypass and remote code execution in SmarterTools SmarterMail

Published: January 22, 2026 Updated: February 6, 2026

Security Bulletin ID SB2026012223
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Improper authentication (CVE-ID: CVE-2026-23760)

CWE-ID: CWE-287 - Improper Authentication

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red


The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an error in the password reset feature. A remote non-authenticated attacker can reset password of an administrative user and gain full access to the application, including ability to execute system commands. 


2) OS Command Injection (CVE-ID: CVE-2026-24423)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to missing authentication in the ConnectToHub API method. A remote non-authenticated attacker can send a specially crafted HTTP request and execute arbitrary OS commands on the system.


Remediation

Install update from vendor's website.

References