CVE-2026-104082 SmarterMail - Remote Code Execution

SmarterMail before build 9777 contains a remote code execution caused by bypassing Volume Mount script-directory containment via domain-put endpoint, letting attackers with SysAdmin-scoped tokens execute SYSTEM-level code, exploit requires SysAdmin-scoped access token.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Required
EPSS
0.61% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution, Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published
9 October 2026
Updated
15 October 2026
Weakness
CWE-94

Vendor fix

Update to build 9777 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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