Opensmtpd vulnerabilitiesAnd the versions its exploited flaws hit.
Opensmtpd is made by OpenBSD. We track 3 published vulnerabilities in it, across 7 versions. 1 of them is on the list of flaws known to be exploited, the newest added on 25 March 2022. If you run Opensmtpd, check your version against the exploited flaws below and patch those first.
The most recent Opensmtpd flaw added to the known-exploited list is CVE-2020-7247, on 25 March 2022. We keep watching the known-exploited list.
Which versions of Opensmtpd do the exploited flaws hit?
Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.
- CVE-2020-7247Exploited list, 25 Mar 2022
OpenSMTPD Remote Code Execution Vulnerability
6.6
Which Opensmtpd vulnerabilities are being exploited?
1 flaw is on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 9.8OpenSMTPD 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.
Which Opensmtpd flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 99%
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...
- 4.0%CVE-2015-7687Critical
Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.
- 2.5%CVE-2013-2125Medium
OpenSMTPD before 5.3.2 does not properly handle SSL sessions, which allows remote attackers to cause a denial of service (connection blocking) by keeping a connection open.
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1 flaw being exploited affects software Acme tracks
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.
- Matched to
- Opensmtpd on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 3 published vulnerabilities listed under the name Opensmtpd, across 7 versions. The most recent Opensmtpd flaw added to the known-exploited list is CVE-2020-7247, on 25 March 2022.
1 is on the list of flaws known to be exploited. The most recently added is CVE-2020-7247.
Each flaw names its own versions, usually as ranges. The newest, CVE-2020-7247, affects 6.6. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Opensmtpd. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.