CVE-2020-7247

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2022-03-25. Federal remediation due 2022-04-15.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

98.97% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 99.9% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-01-29 15:53Z6 YR AGO

Last updated

2025-10-21 23:35Z1 YR AGO

Reserved

2020-01-20

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-755Improper Handling of Exceptional ConditionsClass
• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.1

Document digest

12014bf6c9d482cca9e4cfdbbf24dcfa2616ae8ebb5c59388de97f208a58d739

• www.openbsd.orghttps://www.openbsd.org/security.htmlx_refsource_CONFIRM
• www.openwall.comhttp://www.openwall.com/lists/oss-security/2020/01/28/3x_refsource_MISC
• github.comhttps://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45x_refsource_CONFIRM
• packetstormsecurity.comhttp://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.htmlx_refsource_MISC
• seclists.org20200129 [SECURITY] [DSA 4611-1] opensmtpd security updatehttps://seclists.org/bugtraq/2020/Jan/51mailing-listx_refsource_BUGTRAQ
• www.debian.orgDSA-4611https://www.debian.org/security/2020/dsa-4611vendor-advisoryx_refsource_DEBIAN
• packetstormsecurity.comhttp://packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execution.htmlx_refsource_MISC
• www.kb.cert.orgVU#390745https://www.kb.cert.org/vuls/id/390745third-party-advisoryx_refsource_CERT-VN
• seclists.org20200131 LPE and RCE in OpenSMTPD (CVE-2020-7247)http://seclists.org/fulldisclosure/2020/Jan/49mailing-listx_refsource_FULLDISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Execution.htmlx_refsource_MISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Escalation.htmlx_refsource_MISC
• usn.ubuntu.comUSN-4268-1https://usn.ubuntu.com/4268-1/vendor-advisoryx_refsource_UBUNTU
• lists.fedoraproject.orgFEDORA-2020-b92d7083cahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/vendor-advisoryx_refsource_FEDORA
• packetstormsecurity.comhttp://packetstormsecurity.com/files/162093/OpenBSD-OpenSMTPD-6.6-Remote-Code-Execution.htmlx_refsource_MISC
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-7247government-resource