Security Digest · Vulnerability record · Known exploited
CVE-2024-11182: MDaemon Email Server Cross-Site Scripting (XSS) Vulnerability
Exploited in the wild (CISA KEV). An XSS issue was discovered in MDaemon Email Server before version 24.5.1c.
CISA KEV · added 2025-05-19 CVSS 5.3 Medium EPSS 31.4% · p98
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Yes, if you run MDaemon Email Server. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-05-19, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-06-09; treat that as the outer limit, not the target.
- EPSS 31.4%, percentile 98: FIRST’s model estimates a 31.4% chance of exploitation activity in the next 30 days, higher than 98% of all scored CVEs (very high). EPSS is a probability, not a verdict.
What it is
An XSS issue was discovered in MDaemon Email Server before version 24.5.1c. An attacker can send an 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.
CISA’s summary
MDaemon Email Server contains a cross-site scripting (XSS) vulnerability that allows a remote attacker to load arbitrary JavaScript code via an HTML e-mail message.
Weakness type: CWE-79.
Product: MDaemon Email Server · Assigned by: ESET · Published: 2024-11-15
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| MDaemon | Email Server | <= 24.5.0 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ESET | 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 |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Attack requirements: none
- Privileges required: none (no login)
- User interaction: passive
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: added 2025-05-19; federal due date 2025-06-09. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active, automatable no, technical impact total.
- FIRST EPSS (model of 2026-10-21): 31.36% probability of exploitation activity in the next 30 days; percentile 98.
Timeline
- — CVE record published by ESET
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- Listed in CISA KEV notes (files.mdaemon.com) files.mdaemon.com
- Listed in CISA KEV notes (mdaemon.com) mdaemon.com
Vulnerability records
- CVE.org record CVE-2024-11182 cve.org
- NVD entry CVE-2024-11182 nvd.nist.gov
Government
All exploited MDaemon vulnerabilities · Today’s Security Digest