CVE-2026-104082 (GCVE-0-2026-104082)

Vulnerability from cvelistv5 – Published: 2026-10-09 15:05 – Updated: 2026-10-09 15:05
VLAI
Title
SmarterMail < Build 9777 SysAdmin Remote Code Execution via Volume Mount
Summary
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.
Severity
8.6 (High)
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
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 5286 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Smartertools Smartermail Affected: 0 , < Build 9777 (custom)
guessed Create a notification for this product.
Date Public
2026-10-08 00:00
Credits
evan
Show details on NVD website
To clipboard 

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        }
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      "providerMetadata": {
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        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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          "name": "Release Notes",
          "tags": [
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          "url": "https://www.smartertools.com/smartermail/release-notes/current#/9526:~:text=Build%209777%20(Oct%208%2C%202026)"
        },
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          "name": "VulnCheck Advisory: SmarterMail \u003c Build 9777 SysAdmin Remote Code Execution via Volume Mount",
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      "source": {
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      "x_generator": {
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    "datePublished": "2026-10-09T15:05:21.411Z",
    "dateReserved": "2026-10-01T18:02:50.084Z",
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    "state": "PUBLISHED"
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      "percentile": "0.42636"
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          }
        ],
        "id": "CVE-2026-104082",
        "lastModified": "2026-10-09T17:06:17.770",
        "metrics": {
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                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
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                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "HIGH",
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}



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