{"id":"CVE-1999-1580","title":"SunOS sendmail 5.59 through 5.65 uses popen to process a forwarding host argument, which allows local users to gain root privileges by modifying the IFS (Internal Field Separator) variable and passing crafted values to the -oR option.","summary":"SunOS sendmail 5.59 through 5.65 uses popen to process a forwarding host argument, which allows local users to gain root privileges by modifying the IFS (Internal Field Separator) variable and passing crafted values to the -oR option.","severity":"high","cvss":7.2,"cvssVector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","published":"1995-08-23","updated":"2026-06-16","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-1999-1580","references":[{"url":"http://www.alw.nih.gov/Security/8lgm/8lgm-Advisory-21.html","label":"cve@mitre.org"},{"url":"http://www.auscert.org.au/render.html?it=1853&cid=1978","label":"cve@mitre.org"},{"url":"http://www.cert.org/advisories/CA-95.11.sun.sendmail-oR.vul","label":"cve@mitre.org"},{"url":"http://www.kb.cert.org/vuls/id/3278","label":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/7829","label":"cve@mitre.org"},{"url":"http://www.alw.nih.gov/Security/8lgm/8lgm-Advisory-21.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.auscert.org.au/render.html?it=1853&cid=1978","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.cert.org/advisories/CA-95.11.sun.sendmail-oR.vul","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/3278","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/7829","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.01105,"epssPercentile":0.64349,"ingestedAt":"2026-06-19T03:39:00.757Z","slug":"CVE-1999-1580","body":"## Overview\n\nSunOS sendmail 5.59 through 5.65 uses popen to process a forwarding host argument, which allows local users to gain root privileges by modifying the IFS (Internal Field Separator) variable and passing crafted values to the -oR option.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}