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CVE-2020-7247: OpenSMTPD Remote Code Execution Vulnerability

criticalknown exploitedpublic exploitCVE-2020-7247
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: OpenSMTPDproduct: OpenSMTPDRemote code execution
What
A vulnerability allows remote attackers to execute arbitrary commands as root via a crafted SMTP session.
Who is affected
Deployments of OpenSMTPD, including those in OpenBSD and other products.
Urgency
Remediation is urgent due to the critical nature of the vulnerability and confirmed exploitation.
Action
Update OpenSMTPD to the latest version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2022-03-25
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-7247

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2020-7247coverage & exploitation statusNVD · CVE.org

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