ACTIVELY EXPLOITED
CVE-2020-7247: OpenSMTPD Remote Code Execution Vulnerability
| Vendor | OpenBSD |
|---|---|
| Product | OpenSMTPD |
| Actively exploited | Yes |
| Added to CISA KEV | 25 Mar 2022 |
| CISA federal deadline | 15 Apr 2022 |
| Weakness (CWE) | CWE-755, CWE-78 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
smtp_mailaddr in smtp_session.c in OpenSMTPD, as used in OpenBSD and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session.
SOURCES
Other OpenBSD flaws
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.