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.
Metrics
Affected Vendors & Products
References
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
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| Metrics |
ssvc
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Mon, 12 Oct 2026 14:00:00 +0000
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| References |
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Fri, 09 Oct 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Smartertools
Smartertools smartermail |
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| Vendors & Products |
Smartertools
Smartertools smartermail |
Fri, 09 Oct 2026 15:30:00 +0000
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| 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 |
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| Metrics |
cvssV3_1
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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
Updated: 2026-10-14T15:52:28.753Z
Status : Awaiting Analysis
Published: 2026-10-09T16:17:20.833
Modified: 2026-10-14T16:17:30.853
Link: CVE-2026-104082
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