Is CVE-2025-3929 actively exploited?

CVE-2025-3929 has no public evidence of in-the-wild exploitation as of 2025-05-12.

What is the CVSS score for CVE-2025-3929?

CVE-2025-3929 has a CVSS score of 5.3 (MEDIUM severity). 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.

How do I patch CVE-2025-3929?

Patch guidance is available from mdaemon security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-3929.

CVE-2025-3929 - remediation guidance & executive summary

Q: Which products are affected by CVE-2025-3929?

9 products: mdaemon email server, mdaemon email server, mdaemon email server, mdaemon email server, mdaemon email server, and 4 more.

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.

CVSS Metrics

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
Attack Vector: network
Complexity: low
Privileges: none
User Action: passive
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-79 · Cross-site Scripting (XSS)CWE-79 · Cross-site Scripting (XSS)

Metadata

Primary Vendor: MDAEMON
Published: 4/29/2025
Last Modified: 5/12/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mdaemon : email_servermdaemon : email_servermdaemon : email_servermdaemon : email_servermdaemon : email_servermdaemon : email_servermdaemon : email_servermdaemon : email_servermdaemon : email_server

Remediation Guidance

Executive Summary

View on NIST NVD