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Servers and applications

CVE-2002-0698

Buffer overflow in Internet Mail Connector (IMC) for Microsoft Exchange Server 5.5 allows remote attackers to execute arbitrary code via an EHLO request from a system with a long name as obtained through a reverse DNS lookup, which triggers the overflow in IMC's hello response.

Severity
High 7.5
Published
12 Aug 2002
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
20% in the next 30 daysHigher than 97% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Buffer overflow (CWE-120)
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
Microsoft Exchange ServerServers and applications · cpe:a:microsoft:exchange_server
  • Version 5.5
  • Version 5.5-sp1
  • Version 5.5-sp2
  • Version 5.5-sp3
  • Version 5.5-sp4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2002-0698
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2002-0698