{"id":"CVE-1999-0994","aliases":["EUVD-1999-0975","GHSA-r7rj-gr4g-8x94"],"status":"published","title":"Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes,...","description":"Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.07136,"percentile":0.94316,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-255"],"published":"1999-12-16T05:00:00Z","modified":"2026-06-16T21:49:28Z","products":[{"vendor":"microsoft","product":"windows_nt"}],"references":[{"url":"http://www.securityfocus.com/bid/873","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ248183","tags":["vendor-advisory","x_refsource_MSKB","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-056","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-0994"},{"url":"http://support.microsoft.com/default.aspx?scid=kb;[LN];Q248183"},{"url":"https://github.com/advisories/GHSA-r7rj-gr4g-8x94"}],"sources":{"cve":[{"id":"CVE-1999-0994","description":"Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.","status":"published","published":"2000-01-18T05:00:00Z","modified":"2024-08-01T16:55:29.375Z","updated_at":"2026-11-02T14:33:53.60785Z"}],"euvd":[{"id":"EUVD-1999-0975","description":"Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.","status":"published","published":"2000-01-18T05:00:00Z","modified":"2024-08-01T16:55:29Z","updated_at":"2026-11-03T03:50:44.737415Z"}],"ghsa":[{"id":"GHSA-r7rj-gr4g-8x94","title":"Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes,...","description":"Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.","status":"published","published":"2022-04-30T18:11:36Z","modified":"2025-04-03T03:36:31Z","updated_at":"2026-11-02T15:00:37.05918Z"}],"nvd":[{"id":"CVE-1999-0994","description":"Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.","status":"published","published":"1999-12-16T05:00:00Z","modified":"2026-06-16T21:49:28.96Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-255"],"updated_at":"2026-11-02T13:58:40.923898Z"}]}}