CVE-2025-3929

5.3 mediumEPSS 0.6%

Medium (5.3) in mdaemon email server. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

5.3 medium

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

CVSS 3.1

6.1 medium

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2025-04-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mdaemon:email_server

References

https://mdaemon.com/pages/downloads-critical-updates

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