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5.0

Microsoft NetMeeting can be crashed by malformed chat packets

CVE-2003-0506 · published 23 years ago
Summary

Microsoft NetMeeting version 3.01 prior to Service Pack 4 can be forced to stop working when it receives specially crafted network data, such as a malformed chat message. This causes the conference session to shut down, interrupting meetings. Apply the latest service pack or update to a newer version to prevent the crash.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
microsoft netmeeting 3.0.1
cpe:2.3:a:microsoft:netmeeting:3.0.1:*:*:*:*:*:*:*
Original advisory text
Microsoft NetMeeting 3.01 2000 before SP4 allows remote attackers to cause a denial of service (shutdown of NetMeeting conference) via malformed packets, as demonstrated via the chat conversation.
Microsoft NetMeeting 3.01 2000 before SP4 allows remote attackers to cause a denial of service (shutdown of NetMeeting conference) via malformed packets, as demonstrated via the chat conversation.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.0 Medium
Exploitation
11% chance of attack within 30 days
Timeline
Published7 Aug 2003
Updated17 Oct 2026
First seen29 Sep 2026
Sources
CVE-2003-0506 · NVD
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