CVE-2020-7247: OpenSMTPD Remote Code Execution Vulnerability
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.
| Vendor | OpenBSD |
|---|---|
| Product | OpenSMTPD |
| Date added to KEV | 2022-03-25 |
| Due date (BOD 22-01) | 2022-04-15 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-755, CWE-78 |
| Required action | Apply updates per vendor instructions. |
What to do
- Identify every instance of OpenBSD OpenSMTPD in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply updates per vendor instructions.
- Federal civilian agencies must act by 2022-04-15 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
Get new KEV entries in your inbox: free n8n workflow. Free CISA KEV Patch Digest (n8n workflow) (Runbook Foundry). A Monday-morning email of KEV entries added in the previous week (Mon-Sun), with your watchlist vendors listed first.
Not affiliated with n8n GmbH or CISA. Not tested on n8n Cloud. n8n is a trademark of n8n GmbH.
Sources
- NVD entry for CVE-2020-7247 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://nvd.nist.gov/vuln/detail/CVE-2020-7247