What’s Vulnerable › Vulnerabilities

CVE-1999-0203

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 1995-08-17 · updated 2026-06-16

Description

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.

Affected products

• Eric Allman Sendmail: 8.6.10

References

• https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0203
• https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0203

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