CVE-2026-104082

highpriority · track · 39EPSS 0.009 · 59 %ileexploit · PoCDE
grimoire priorityP1 · Urgent
Exploitable?
Public exploit
1 exploit · PoC
Likely / severe?
0.87% (59th) EPSS
CVSS 7.2 · high
Is it mine?
2 products
Check your exposure
Who says so?
1 sources
cert_bund

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

8.6
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.17.2highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · disclosure@vulncheck.comexploitability 1.2 · impact 5.9
v4.08.6highCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · disclosure@vulncheck.com
v4.07.3highCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USCWE-94US
04

exploits (1)

Public proof-of-concept and weaponised exploit code.

05

affected products (2)

Products and version ranges known to be affected.

06

advisories (1)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-3869SmarterTools SmarterMail: Mehrere SchwachstellenDeutsch2026-10-11csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in SmarterTools SmarterMail ausnutzen, um beliebigen Code mit SYSTEM-Rechten auszuführen, erhöhte Rechte auch weiterhin zu behalten, nachdem die Administratorrechte entzogen wurden, Cross-Site-Scripting-Angriffe zu starten, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren sowie weitere, unspezifizierte Angriffe durchzuführen.

07

sources

Which sources assert this record, and when.

cert_bundNVDCVE.orgMITRE
published 2026-10-09modified 2026-10-14
08

references (3) nvd

External citations — patches, advisories, analysis.

scry

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