// For flags

CVE-1999-0284

Alt-N MDaemon Server 2.71 SP1 - SMTP HELO Argument Buffer Overflow

Severity Score

7.5
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Denial of service to NT mail servers including Ipswitch, Mdaemon, and Exchange through a buffer overflow in the SMTP HELO command.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 1998-01-01 CVE Published
  • 1998-03-10 First Exploit
  • 1999-06-07 CVE Reserved
  • 2024-08-01 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Ibm
Search vendor "Ibm"
 Lotus Domino Mail Server
Search vendor "Ibm" for product "Lotus Domino Mail Server"
*-
Affected
Microsoft
Search vendor "Microsoft"
 Exchange Server
Search vendor "Microsoft" for product "Exchange Server"
 4.0
Search vendor "Microsoft" for product "Exchange Server" and version "4.0"
-
Affected
Microsoft
Search vendor "Microsoft"
 Exchange Server
Search vendor "Microsoft" for product "Exchange Server"
 5.0
Search vendor "Microsoft" for product "Exchange Server" and version "5.0"
-
Affected