CVE-2025-61084 (GCVE-0-2025-61084)

Vulnerability from cvelistv5 – Published: 2025-11-05 00:00 – Updated: 2025-11-13 13:57 Disputed
VLAI
Summary
MDaemon Mail Server 23.5.2 validates SPF, DKIM, and DMARC using the email enclosed in angle brackets (<>) in the From: header of SMTP DATA. An attacker can craft a From: header with multiple invisible Unicode thin spaces to display a spoofed sender while passing validation, allowing email spoofing even when anti-spoofing protections are in place. NOTE: this is disputed by the Supplier because UI spoofing occurs in a client, not in a server such as MDaemon's product or any other server implementation. Also, if a client without its own spoofing protection must be used, the Header Screening feature in MDaemon's product can be employed to mitigate the client-side vulnerability.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-05 15:10 UTC
CWE
  • n/a
  • CWE-116 - Improper Encoding or Escaping of Output
  • CWE-20 - Improper Input Validation
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2230 records in the last 180 days details
References
Show details on NVD website
To clipboard 

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