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Vulnerability record · CVE-2000-1020 · published 11 December 2000

CVE-2000-1020: Alt-n mdaemon vulnerability

AAlt N · Mdaemon

Heap overflow in Worldclient 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.

7.5 CVSS 2.0 High EPSS 2.3% · top 17.7%
7.5CVSS 2.0 base score
2.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Heap overflow in Worldclient 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.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=bugtraq&m=96925269716274&w=2
http://www.securityfocus.com/bid/1689 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/5250
http://marc.info/?l=bugtraq&m=96925269716274&w=2
http://www.securityfocus.com/bid/1689 PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/5250

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2006-5709Alt-n mdaemon vulnerabilityUnspecified vulnerability in WorldClient in Alt-N Technologies MDaemon before 9.50 has unknown impact and attack vectors related to a "JavaScript exp…EPSS 1.6%9.0CVE-2003-1470Alt-n mdaemon memory buffer overflow vulnerabilityBuffer overflow in IMAP service in MDaemon 6.7.5 and earlier allows remote authenticated users to cause a denial of service (crash) and execute arbit…EPSS 5.0%7.5CVE-2006-5708Alt-n mdaemon uncontrolled resource consumption vulnerabilityMultiple unspecified vulnerabilities in MDaemon and WorldClient in Alt-N Technologies MDaemon before 9.50 allow attackers to cause a denial of servic…EPSS 1.0%7.5CVE-2006-2646Alt-n mdaemon vulnerabilityBuffer overflow in Alt-N MDaemon, possibly 9.0.1 and earlier, allows remote attackers to execute arbitrary code via a long A0001 argument that begins…EPSS 4.6%7.5CVE-2005-4266Alt-n mdaemon vulnerabilityWorldClient.dll in Alt-N MDaemon and WorldClient 8.1.3 trusts a Session parameter that contains a randomly generated session ID that is associated wi…EPSS 1.3%7.5CVE-2003-1200Alt-N MDaemon FORM2RAW.exe stack buffer overflow via From parameterFORM2RAW.exe in Alt-N MDaemon 6.5.2 through 6.8.5 contains a stack-based buffer overflow reachable through a long From parameter passed to Form2Raw.c…EPSS 65%analysed7.5CVE-2000-1021Alt-n mdaemon vulnerabilityHeap overflow in WebConfig in Mdaemon 3.1.1 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary commands …EPSS 3.8%7.2CVE-2004-2504Alt-n mdaemon vulnerabilityThe GUI in Alt-N Technologies MDaemon 7.2 and earlier, including 6.8, executes child processes such as NOTEPAD.EXE with SYSTEM privileges when users …EPSS 0.48%

Source: NIST National Vulnerability Database (record CVE-2000-1020), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.