{"id":"CVE-2001-0543","aliases":["EUVD-2001-0535","GHSA-3hq4-xvv4-32rv"],"status":"published","title":"Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a...","description":"Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.","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":0.18837,"percentile":0.97304,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401"],"published":"2001-09-20T04:00:00Z","modified":"2026-06-16T21:54:29Z","products":[{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"windows_2000"},{"vendor":"microsoft","product":"windows_nt"}],"references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/6977","tags":["vdb-entry","x_refsource_XF","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/3183","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-043","tags":["vendor-advisory","x_refsource_MS","x_transferred","Patch","Vendor Advisory"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A334","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2001-0543"},{"url":"https://github.com/advisories/GHSA-3hq4-xvv4-32rv"}],"sources":{"cve":[{"id":"CVE-2001-0543","description":"Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.","status":"published","published":"2002-03-09T05:00:00Z","modified":"2024-08-08T04:21:38.955Z","updated_at":"2026-11-02T14:34:43.032065Z"}],"euvd":[{"id":"EUVD-2001-0535","description":"Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.","status":"published","published":"2002-03-09T05:00:00Z","modified":"2024-08-08T04:21:38Z","updated_at":"2026-11-03T01:14:51.137272Z"}],"ghsa":[{"id":"GHSA-3hq4-xvv4-32rv","title":"Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a...","description":"Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.","status":"published","published":"2022-04-30T18:16:15Z","modified":"2023-01-30T05:05:37Z","cwes":["CWE-401"],"updated_at":"2026-11-02T14:47:19.332628Z"}],"nvd":[{"id":"CVE-2001-0543","description":"Memory leak in NNTP service in Windows NT 4.0 and Windows 2000 allows remote attackers to cause a denial of service (memory exhaustion) via a large number of malformed posts.","status":"published","published":"2001-09-20T04:00:00Z","modified":"2026-06-16T21:54:29.897Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:00:40.572315Z"}]}}