{"cve":"CVE-1999-0867","nvd":{"published":"1999-08-11T04:00:00.000","modified":"2026-06-16T21:49:13.347","status":"Modified","description":"Denial of service in IIS 4.0 via a flood of HTTP requests with malformed headers.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ238349","http://www.ciac.org/ciac/bulletins/j-058.shtml","http://www.securityfocus.com/bid/579","https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-029","http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ238349"],"products":["microsoft:commercial_internet_system","microsoft:internet_information_server","microsoft:site_server"],"source":"nvd","synced_at":"2026-10-19T19:33:01.030757803+00:00"},"epss":{"cve":"CVE-1999-0867","score":0.21525,"percentile":0.97619,"date":"2026-10-31"},"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."]}