CVE-2025-3929
CVE-2025-3929 is a medium-severity vulnerability in Mdaemon Email Server with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v4: 5.3
- EPSS exploit prediction: 0% (38th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-14281
- Weakness: CWE-79
- Affected product: Mdaemon Email Server
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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 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.
- How severe is CVE-2025-3929?
- CVE-2025-3929 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2025-3929 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-3929?
- CVE-2025-3929 affects Mdaemon Email Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-3929?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-3929 have an EU (EUVD) identifier?
- Yes. CVE-2025-3929 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14281.
- When was CVE-2025-3929 published?
- CVE-2025-3929 was published on 2025-04-29 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:mdaemon:email_server:*:*:*:*:*:*:*:*
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