{"id":"CVE-1999-0203","title":"In Sendmail, attackers can gain root privileges via SMTP by specifying an improper \"mail from\" address and an invalid \"rcpt to\" address that would cause the mail to bounce to a program.","summary":"In Sendmail, attackers can gain root privileges via SMTP by specifying an improper \"mail from\" address and an invalid \"rcpt to\" address that would cause the mail to bounce to a program.","severity":"critical","cvss":10,"cvssVector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","published":"1995-08-17","updated":"2026-06-16","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-1999-0203","references":[{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0203","label":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0203","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.02124,"epssPercentile":0.81101,"ingestedAt":"2026-06-19T03:39:00.757Z","slug":"CVE-1999-0203","body":"## Overview\n\nIn Sendmail, attackers can gain root privileges via SMTP by specifying an improper \"mail from\" address and an invalid \"rcpt to\" address that would cause the mail to bounce to a program.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":55,"likelihood":0.4,"exploitation":0,"ransomware":0},"changes":[]}