dmail, an attacker could use a pipe character to execute root commands. NIST National Vulnerability Database (NVD) -- services.nvd.nist.gov (CVE / CVSS / CPE). {"cve":{"id":"CVE-1999-0163","sourceIdentifier":"cve@mitre.org","published":"1997-01-01T05:00:00.000","lastModified":"2026-06-16T21:47:44.160","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In older versions of Sendmail, an attacker could use a pipe character to execute root commands."}],"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:L/AC:L/Au:N/C:C/I:C/A:C","baseScore":7.2,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":3.9,"impactScore":10.0,"acInsufInfo":false,"obtainAllPrivilege":true,"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:eric_allman:sendmail:*:*:*:*:*:*:*:*","matchCriteriaId":"887964FC-405F-40DB-B848-806748BA6FE8"}]}]}],"references":[{"url":"https://www.cve.org/CVERecord?id=CVE-1999-0163","source":"cve@mitre.org"},{"url":"https://www.cve.org/CVERecord?id=CVE-1999-0163","source":"af854a3a-2127-422b-91ae-364da2661108"}]}},