CVE-2002-1831
Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2002-1831- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2002-1831- Updated
- 2026-11-02
EUVDEUVD-2002-1810 No score
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.
- Record
EUVD-2002-1810- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-25m6-rvg8-32wp No score
Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of...
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.
- Record
GHSA-25m6-rvg8-32wp- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Microsoft MSN Messenger 1 < 4 - Malformed Invite Request Denial of Service | 2002-05-24 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2002-1831 is a medium vulnerability (CVSS 5.0) in Microsoft Msn Messenger, published December 31, 2002. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 22.3%, the 97th percentile. No source names a fixed version.