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Exploited vulnerability · CISA KEV

Is CVE-2024-11182 exploited? Yes: in CISA KEV since 19 May 2025

Gociux · MDaemon Email Server · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2024-11182, MDaemon Email Server Cross-Site Scripting (XSS) Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 19 May 2025, 185 days after it was published. It affects MDaemon Email Server. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 19 May 2025
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity5.3CVSS 4.0 · medium
US federal due9 Jun 2025BOD 22-01 deadline

What it is

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.

VendorMDaemon (1 exploited CVE in KEV)
ProductEmail Server
VulnerabilityMDaemon Email Server Cross-Site Scripting (XSS) Vulnerability
WeaknessCWE-79
Published15 Nov 2024
Added to KEV19 May 2025
Reported by (CNA)ESET

What to do

  1. Check whether you run it. Look for Email Server in your asset inventory, including appliances and cloud images. Stack check lists every exploited MDaemon CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 15 Nov 2024.
  4. Get told next time. Email alerts when CISA adds a CVE for MDaemon.

References

Questions

Is CVE-2024-11182 being exploited?

Yes. CISA added CVE-2024-11182 to the Known Exploited Vulnerabilities catalog on 19 May 2025, which means there is reliable evidence of exploitation in the wild.

Is CVE-2024-11182 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2024-11182?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check MDaemon's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Email Server and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in May 2025 · act-now radar.

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