CVE-2026-24423: CWE-306 Missing Authentication for Critical Function in SmarterTools SmarterMail
SmarterTools SmarterMail versions prior to build 9511 contain an unauthenticated remote code execution vulnerability in the ConnectToHub API method. The attacker could point the SmarterMail to the malicious HTTP server, which serves the malicious OS command. This command will be executed by the vulnerable application.
AI Analysis
Technical Summary
CVE-2026-24423 is a critical vulnerability in SmarterTools SmarterMail prior to build 9511. It involves missing authentication (CWE-306) for the ConnectToHub API method, allowing an unauthenticated attacker to cause the application to execute arbitrary OS commands by pointing it to a malicious HTTP server. This results in remote code execution without requiring user interaction or privileges.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to execute arbitrary operating system commands on the affected SmarterMail server, potentially leading to full system compromise. The vulnerability has a CVSS 4.0 base score of 9.3, indicating critical severity with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the ConnectToHub API and monitor for suspicious activity related to this endpoint.
CVE-2026-24423: CWE-306 Missing Authentication for Critical Function in SmarterTools SmarterMail
Description
SmarterTools SmarterMail versions prior to build 9511 contain an unauthenticated remote code execution vulnerability in the ConnectToHub API method. The attacker could point the SmarterMail to the malicious HTTP server, which serves the malicious OS command. This command will be executed by the vulnerable application.
CVSS v4.0
Score 9.3critical
Affected software
SmarterTools
SmarterMail
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-24423 is a critical vulnerability in SmarterTools SmarterMail prior to build 9511. It involves missing authentication (CWE-306) for the ConnectToHub API method, allowing an unauthenticated attacker to cause the application to execute arbitrary OS commands by pointing it to a malicious HTTP server. This results in remote code execution without requiring user interaction or privileges.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to execute arbitrary operating system commands on the affected SmarterMail server, potentially leading to full system compromise. The vulnerability has a CVSS 4.0 base score of 9.3, indicating critical severity with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the ConnectToHub API and monitor for suspicious activity related to this endpoint.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-01-22T18:21:46.813Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6973aa764623b1157c50089a
Added to database: 01/23/2026, 17:05:58 UTC
Last enriched: 08/04/2026, 13:25:25 UTC
Last updated: 09/10/2026, 22:19:22 UTC
Views: 497
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