{"id":"CVE-1999-1164","aliases":["EUVD-1999-1145","GHSA-f498-r72q-hr69"],"status":"published","title":"Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple...","description":"Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.","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":"2026-11-09","score":0.13227,"percentile":0.96405,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"1999-06-25T04:00:00Z","modified":"2026-06-16T21:49:51Z","products":[{"vendor":"microsoft","product":"outlook"},{"vendor":"microsoft","product":"outlook_express"}],"references":[{"url":"http://marc.info/?l=bugtraq\u0026m=93041631215856\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-1164"},{"url":"https://github.com/advisories/GHSA-f498-r72q-hr69"}],"sources":{"cve":[{"id":"CVE-1999-1164","description":"Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.","status":"published","published":"2001-09-12T04:00:00Z","modified":"2024-08-01T17:02:53.767Z","updated_at":"2026-11-02T14:33:53.295018Z"}],"euvd":[{"id":"EUVD-1999-1145","description":"Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.","status":"published","published":"2001-09-12T04:00:00Z","modified":"2024-08-01T17:02:53Z","updated_at":"2026-11-03T03:50:43.777799Z"}],"ghsa":[{"id":"GHSA-f498-r72q-hr69","title":"Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple...","description":"Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.","status":"published","published":"2022-04-30T18:11:56Z","modified":"2023-01-30T05:04:41Z","updated_at":"2026-11-02T14:47:05.929455Z"}],"nvd":[{"id":"CVE-1999-1164","description":"Microsoft Outlook client allows remote attackers to cause a denial of service by sending multiple email messages with the same X-UIDL headers, which causes Outlook to hang.","status":"published","published":"1999-06-25T04:00:00Z","modified":"2026-06-16T21:49:51.417Z","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":"2026-11-02T13:58:40.923898Z"}]}}