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Servers and applications

CVE-2003-0714

The Internet Mail Service in Exchange Server 5.5 and Exchange 2000 allows remote attackers to cause a denial of service (memory exhaustion) by directly connecting to the SMTP service and sending a certain extended verb request, possibly triggering a buffer overflow in Exchange 2000.

Severity
High 7.5
Published
17 Nov 2003
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
78% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Uncontrolled resource consumption (CWE-400)
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 2000-sp3
  • Version 2000-sp2
  • Version 2000-sp1
  • Version 2000
All 9 release lines
  • Version 5.5
  • Version 5.5-sp1
  • Version 5.5-sp2
  • Version 5.5-sp3
  • Version 5.5-sp4
  • Version 2000
  • Version 2000-sp1
  • Version 2000-sp2
  • Version 2000-sp3

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2003-0714
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2003-0714