{"id":"CVE-2026-104082","title":"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…","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…","severity":"high","cvss":7.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-94"],"published":"2026-10-09","updated":"2026-10-14","sourceUpdated":"2026-10-14T16:17:30.853","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104082","references":[{"url":"https://blog.evan.lat/posts/sm/","label":"disclosure@vulncheck.com"},{"url":"https://www.smartertools.com/smartermail/release-notes/current#/9526:~:text=Build%209777%20(Oct%208%2C%202026)","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/smartermail-build-9777-sysadmin-remote-code-execution-via-volume-mount","label":"disclosure@vulncheck.com"}],"tags":["nvd","exploit-available","cve.org"],"epss":0.00873,"epssPercentile":0.58722,"exploits":{"github":1,"githubRepos":["https://github.com/eev4n/smartermail"],"checkedAt":"2026-10-27T16:53:59.343Z"},"exploitAvailable":true,"ingestedAt":"2026-10-09T17:04:42.806Z","vendor":"Smartertools","product":"Smartermail","affected":["Smartermail < Build 9777"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-10-14T15:52:24.034649Z"},"slug":"CVE-2026-104082","body":"## Overview\n\nSmarterMail 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":52,"depthScoreParts":{"impact":39.6,"likelihood":0.2,"exploitation":12,"ransomware":0},"changes":[{"seq":220313,"id":"CVE-2026-104082","ts":1791996094546,"field":"exploit_available","old":"false","new":"true"}]}