CVE-2002-1831 json
Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of service (crash) via an invite request that con…
published 2002-12-31 23 y ago modified 2026-06-16 4 mo ago also EUVD-2002-1810
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 22.3%
- EPSS 22.3% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Exploit-DB
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.
Timeline
- First public exploit (EDB-21481)
- Published
Exploit prediction
22.26% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-21481 Microsoft MSN Messenger 1 < 4 - Malformed Invite Request Denial of Service dos, 2002-05-24
- securityfocus.com http://www.securityfocus.com/bid/4827 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
References
-
securityfocus.com
/bid/4827
vdb-entry, exploit
-
iss.net
/security_center/static/9161.php
vdb-entry
-
online.securityfocus.com
/archive/1/274086
mailing-list
Sources
- CVE List CVE-2002-1831
- NVD CVE-2002-1831
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.