{"schema":"threatline.record/2","record":{"id":"CVE-2026-104082","aliases":[],"summary":"SmarterMail < Build 9777 SysAdmin Remote Code Execution via Volume Mount","details":"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.","categories":["Unclassified"],"product":"Smartermail","vendor":"Smartertools","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-104082","source_modified_at":"2026-10-14T16:04:18.362Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Smartermail","vendor":"Smartertools","versions":[{"status":"affected","version":"0","versionType":"custom","lessThan":"Build 9777"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.6,"severity":"High","kev":{"listed":false},"epss":{"probability":0.0061,"percentile":0.48562,"score_date":"2026-10-23"},"published_at":"2026-10-09T15:05:21.411Z","modified_at":"2026-10-14T16:04:18.362Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-104082","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T16:04:18.362Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-104082","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://www.smartertools.com/smartermail/release-notes/current#/9526:~:text=Build%209777%20(Oct%208%2C%202026)","tags":["release-notes","patch"]},{"source":"CVE List","url":"https://blog.evan.lat/posts/sm/","tags":["technical-description","exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/smartermail-build-9777-sysadmin-remote-code-execution-via-volume-mount","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"total","assessed_at":"2026-10-14T15:52:24.034649Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-14T16:04:18.362Z","content_hash":"ed104801c4b2d4a42557fc40eeaa4842ff9d613eca4423ce826812901757991e"}}