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Servers and applications

CVE-2000-0524

Microsoft Outlook and Outlook Express allow remote attackers to cause a denial of service by sending email messages with blank fields such as BCC, Reply-To, Return-Path, or From.

Severity
Medium 5.0
Published
5 Jun 2000
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
15% in the next 30 daysHigher than 96% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
Microsoft Exchange ServerServers and applications · cpe:a:microsoft:exchange_server
  • Version 4.0
  • Version 5.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2000-0524
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2000-0524