# CVE-2002-1831

## Summary

- **CVE ID:** CVE-2002-1831
- **Severity:** UNKNOWN
- **CVSS Score:** 0.41
- **CWE:** N/A
- **Published:** Jun 28, 2005
- **Last Modified:** Mar 16, 2026

## Description

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.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](http://www.iss.net/security_center/static/9161.php)
- [CNA](http://www.securityfocus.com/bid/4827)
- [CNA](http://online.securityfocus.com/archive/1/274086)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 10.37%
- **EPSS Percentile:** 93.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._