{"id":"CVE-2002-1831","aliases":["EUVD-2002-1810","GHSA-25m6-rvg8-32wp"],"status":"published","title":"Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of...","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.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.2226,"percentile":0.97697,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2002-12-31T05:00:00Z","modified":"2026-06-16T22:00:08Z","exploits":[{"source":"exploitdb","id":"EDB-21481","title":"Microsoft MSN Messenger 1 \u003c 4 - Malformed Invite Request Denial of Service","type":"dos","platform":"windows","date":"2002-05-24","verified":true,"url":"https://www.exploit-db.com/exploits/21481"}],"products":[{"vendor":"microsoft","product":"msn_messenger"}],"references":[{"url":"http://www.iss.net/security_center/static/9161.php","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securityfocus.com/bid/4827","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit"]},{"url":"http://online.securityfocus.com/archive/1/274086","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-1831"},{"url":"https://github.com/advisories/GHSA-25m6-rvg8-32wp"}],"sources":{"cve":[{"id":"CVE-2002-1831","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.","status":"published","published":"2005-06-28T04:00:00Z","modified":"2024-09-17T00:02:12.003Z","updated_at":"2026-11-02T14:33:54.641433Z"}],"euvd":[{"id":"EUVD-2002-1810","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.","status":"published","published":"2005-06-28T04:00:00Z","modified":"2024-09-17T00:02:12Z","updated_at":"2026-11-03T00:29:02.877229Z"}],"ghsa":[{"id":"GHSA-25m6-rvg8-32wp","title":"Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of...","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.","status":"published","published":"2022-04-30T18:21:57Z","modified":"2023-01-30T05:06:21Z","updated_at":"2026-11-02T14:47:28.633261Z"}],"nvd":[{"id":"CVE-2002-1831","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.","status":"published","published":"2002-12-31T05:00:00Z","modified":"2026-06-16T22:00:08.32Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:43.239725Z"}]}}