CVE-2025-68624

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-68624
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-14 01:16:27 UTC
Updated2026-09-14 01:16:27 UTC
DescriptionN-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server accepts arbitrary sender domains without enforcing any domain-to-account binding. As a result, an attacker from any tenant can impersonate other tenant domains, producing messages that pass SPF and DMARC validation. NOTE: N-able's position is that the behavior is intended functionality of its shared SMTP relay architecture and that the service does not represent that it enforces per-tenant sender-domain binding.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem Types: CWE-290 | CWE-290 CWE-290 Authentication Bypass by Spoofing

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNACVSS4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA N-able Mail Assure affected April 2026 custom Not specified

References

ReferenceSourceLinkTags
seclists.org/fulldisclosure/2026/Jun/10 af854a3a-2127-422b-91ae-364da2661108 seclists.org
deepsec.net/speaker.html [email protected] deepsec.net
gist.github.com/alessandrobertoldi/1ebe0f48aa0119d787ac0ff710057d92 [email protected] gist.github.com
www.n-able.com/products/mail-assure [email protected] www.n-able.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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