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CVE

CVE-2025-3929

An XSS issue was discovered in MDaemon Email Server version 25.0.1 and below. An attacker can send a specially crafted H

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.

MEDIUM · CVSS 6.1 EPSS 0.00155
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
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Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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Affected Products & Versions

9
mdaemon email server>= 20.0.0 and < 20.0.9
mdaemon email server>= 21.0.0 and < 21.0.8
mdaemon email server>= 21.5.0 and < 21.5.6
mdaemon email server>= 22.0.0 and < 22.0.7
mdaemon email server>= 23.0.0 and < 23.0.4
mdaemon email server>= 23.5.0 and < 23.5.5
mdaemon email server>= 24.0.0 and < 24.0.4
mdaemon email server>= 24.5.0 and < 24.5.3
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Scoring & Timeline

6.1
MEDIUM · CVSS v3.1 · security@eset.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Apr 2025 · 12:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://mdaemon.com/pages/downloads-critical-updatesRelease Notes
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