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CVE-2002-1831

MediumPublished

Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of service (crash) via an invite request that contains hex-encoded...

Published: Jun 28, 2005
Updated: Sep 17, 2024
Assigning CNA: mitre
Evidence observed: May 24, 2002

Primary CVSS

5.0/ 10Medium

nvd · CVSS 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS probability estimate

22.3%

Moderate · next 30 days

Percentile: 97.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of service (crash) via an invite request that contains hex-encoded spaces (%20) in the Invitation-Cookie field.

Sources

Microsoft MSN Messenger 1 < 4 - Malformed Invite Request Denial of ServiceExploit
Beck Mr.R · windows · May 24, 2002

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