{"cve":"CVE-2001-0509","nvd":{"published":"2001-09-20T04:00:00.000","modified":"2026-06-16T21:54:26.457","status":"Modified","description":"Vulnerabilities in RPC servers in (1) Microsoft Exchange Server 2000 and earlier, (2) Microsoft SQL Server 2000 and earlier, (3) Windows NT 4.0, and (4) Windows 2000 allow remote attackers to cause a denial of service via malformed inputs.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-041","https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A82","https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-041","https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A82"],"products":["microsoft:exchange_server","microsoft:sql_server","microsoft:windows_2000","microsoft:windows_nt"],"source":"nvd","synced_at":"2026-10-19T19:33:02.361923049+00:00"},"epss":{"cve":"CVE-2001-0509","score":0.16975,"percentile":0.97069,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}