SmarterMail before build 9777 contains a remote code execution vulnerability that allows an attacker holding a SysAdmin-scoped access token to bypass the Volume Mount script-directory containment control by provisioning a new mail domain with an arbitrary FileStore root path inside the trusted Scripts directory via the domain-put endpoint. Attackers can disclose the Scripts path through the AddOrUpdateMount endpoint, clear the upload extension blacklist via the global-mail endpoint, then upload a malicious script through the ordinary mail file-storage upload API so that saving a CommandMount triggers RunScript before validation, resulting in a reverse shell executing as the SmarterMail service account with SYSTEM-level privileges.
History

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:smartertools:smartermail:-:*:*:*:*:*:*:*

Wed, 14 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 12 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
References

Fri, 09 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Smartertools
Smartertools smartermail
Vendors & Products Smartertools
Smartertools smartermail

Fri, 09 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Description SmarterMail before build 9777 contains a remote code execution vulnerability that allows an attacker holding a SysAdmin-scoped access token to bypass the Volume Mount script-directory containment control by provisioning a new mail domain with an arbitrary FileStore root path inside the trusted Scripts directory via the domain-put endpoint. Attackers can disclose the Scripts path through the AddOrUpdateMount endpoint, clear the upload extension blacklist via the global-mail endpoint, then upload a malicious script through the ordinary mail file-storage upload API so that saving a CommandMount triggers RunScript before validation, resulting in a reverse shell executing as the SmarterMail service account with SYSTEM-level privileges.
Title SmarterMail < Build 9777 SysAdmin Remote Code Execution via Volume Mount
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-09T15:05:21.411Z

Updated: 2026-10-27T01:30:36.085Z

Reserved: 2026-10-01T18:02:50.084Z

Link: CVE-2026-104082

cve-icon Vulnrichment

Updated: 2026-10-14T15:52:28.753Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-09T16:17:20.833

Modified: 2026-10-14T16:17:30.853

Link: CVE-2026-104082

cve-icon Redhat

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