CVE-2000-1021: Alt-N MDaemon

High severity, CVSS 7.5. EPSS: 3.8% chance of exploitation in the next 30 days.

Heap overflow in WebConfig in Mdaemon 3.1.1 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary commands via a long URL.

Affected products

• Alt-N MDaemon: version 3.1.1 only

Published 2000-12-11. Last modified 2026-06-16.