{"id":"CVE-1999-1231","aliases":["EUVD-1999-1212","GHSA-7g97-5hq7-x7mm"],"status":"published","title":"ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct...","description":"ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server.","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":"2026-11-09","score":0.01464,"percentile":0.73826,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"1999-06-09T04:00:00Z","modified":"2026-06-16T21:49:59Z","products":[{"vendor":"ssh","product":"ssh2"}],"references":[{"url":"http://www.securityfocus.com/archive/1/14758","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Exploit","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/2276","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-1231"},{"url":"https://github.com/advisories/GHSA-7g97-5hq7-x7mm"}],"sources":{"cve":[{"id":"CVE-1999-1231","description":"ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server.","status":"published","published":"2001-09-12T04:00:00Z","modified":"2024-08-01T17:02:53.79Z","updated_at":"2026-11-02T14:33:53.295018Z"}],"euvd":[{"id":"EUVD-1999-1212","description":"ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server.","status":"published","published":"2001-09-12T04:00:00Z","modified":"2024-08-01T17:02:53Z","updated_at":"2026-11-03T03:50:43.346493Z"}],"ghsa":[{"id":"GHSA-7g97-5hq7-x7mm","title":"ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct...","description":"ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server.","status":"published","published":"2022-04-30T18:12:03Z","modified":"2023-01-30T05:04:42Z","updated_at":"2026-11-02T14:47:06.389944Z"}],"nvd":[{"id":"CVE-1999-1231","description":"ssh 2.0.12, and possibly other versions, allows valid user names to attempt to enter the correct password multiple times, but only prompts an invalid user name for a password once, which allows remote attackers to determine user account names on the server.","status":"published","published":"1999-06-09T04:00:00Z","modified":"2026-06-16T21:49:59.88Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T13:58:40.923898Z"}]}}