CVE-2020-7247 Scanner
Detects 'Remote Code Execution (RCE)' vulnerability in OpenSMTPD affects v. 6.6.
Used 3.5k times · 5.9k assets checked · domain, ipv4, subdomain
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CISA Known Exploited Vulnerability
This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.
CVE
CVE-2020-7247
9.8
CVSScritical
Exploitable remotely over the internet · no authentication required.
Description
smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.
Attack Vector
Network
Privileges Req.
None
User Interaction
None
Updated Sep 18, 2026View on NVD →
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