CVE-2002-1831 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 22.3% (pctl 98)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 22.26% — more likely to be exploited than 98% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2002-12-31 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| microsoft | msn messenger |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft MSN Messenger 1 < 4 - Malformed Invite Request Denial of Service | 2002-05-24 |
References
→ the Explorer · watch your stack · NVD