CVE-2025-3929

CVE Enrichment

CVSS: 5.3 MEDIUM
EPSS: 0.64%
EPSS Percentile: 48.94%
CISA KEV: Not listed

Description

An XSS issue was discovered in MDaemon Email Server version 25.0.1 and below. An attacker can send a specially crafted HTML e-mail message with JavaScript in an img tag. This could allow a remote attacker to load arbitrary JavaScript code in the context of a webmail user's browser window, and access user data.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: security@eset.com
Published: 29-Apr-2025 19:15
Last Modified: 17-Jun-2026 16:20
EPSS Date: 2026-10-10
CWE: CWE-79

CVSS Vector


            CVSS:4.0                            AV:N /
                            AC:L /
                            AT:N /
                            PR:N /
                            UI:P /
                            VC:L /
                            VI:L /
                            VA:N /
                            SC:L /
                            SI:L /
                            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:X

Affected Products / Versions

mdaemon / email_server
Version / affected range: * · from (inclusive) 20.0.0 · before (exclusive) 20.0.9
cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*
mdaemon / email_server
Version / affected range: * · from (inclusive) 21.0.0 · before (exclusive) 21.0.8
cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*
mdaemon / email_server
Version / affected range: * · from (inclusive) 21.5.0 · before (exclusive) 21.5.6
cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*
mdaemon / email_server
Version / affected range: * · from (inclusive) 22.0.0 · before (exclusive) 22.0.7
cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*
mdaemon / email_server
Version / affected range: * · from (inclusive) 23.0.0 · before (exclusive) 23.0.4
cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*
mdaemon / email_server
Version / affected range: * · from (inclusive) 23.5.0 · before (exclusive) 23.5.5
cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*
mdaemon / email_server
Version / affected range: * · from (inclusive) 24.0.0 · before (exclusive) 24.0.4
cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*
mdaemon / email_server
Version / affected range: * · from (inclusive) 24.5.0 · before (exclusive) 24.5.3
cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*
mdaemon / email_server
Version / affected range: * · from (inclusive) 25.0.0 · before (exclusive) 25.0.2
cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*

References

security@eset.com

Last enrichment sync: 11-Oct-2026 13:06
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

CVE-2025-3929: mDaemon (zero-day) TA458 Uses Half-Click Webmail Exploits to Steal Email and Establish Persistent Access

CVE (6)

Malware (1)

Threat Actors (3)

MITRE ATT&CK (5)

Vendors (1)

Products (5)

Tools (1)

Industries (5)

Countries (5)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.