A mail server is explicitly configured to allow SMTP mail relay, which allows abuse by spammers.
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0512
Source: Mitre, NVD
Published: 1999-01-01
Updated: 2026-06-16
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 7.2
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
Severity: High
EPSS: 0.12243