n of NCSA Telnet package for Macintosh and PC enables FTP, even though it does not include an \ NIST National Vulnerability Database (NVD) -- services.nvd.nist.gov (CVE / CVSS / CPE). {"cve":{"id":"CVE-1999-1090","sourceIdentifier":"cve@mitre.org","published":"1991-09-10T04:00:00.000","lastModified":"2026-06-16T21:49:42.053","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"The default configuration of NCSA Telnet package for Macintosh and PC enables FTP, even though it does not include an \"ftp=yes\" line, which allows remote attackers to read and modify arbitrary files."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","baseScore":7.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"HIGH","exploitabilityScore":10.0,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ncsa:telnet:*:*:*:*:*:*:*:*","matchCriteriaId":"5CA584DD-D936-4EA3-A6E6-D39763480191"}]}]}],"references":[{"url":"http://www.cert.org/advisories/CA-1991-15.html","source":"cve@mitre.org","tags":["Patch","Third Party Advisory","US Government Resource"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/1844","source":"cve@mitre.org"},{"url":"http://www.cert.org/advisories/CA-1991-15.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory","US Government Resource"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/1844","source":"af854a3a-2127-422b-91ae-364da2661108"}]}},