OpenBSD vulnerabilities1 known to be exploited.
OpenBSD has 334 published vulnerabilities across 7 products in our catalogue. 1 of them is on the list of flaws known to be exploited, so criminals are using them now. The most affected product is OpenBSD, with 203. If you run OpenBSD software, patch the exploited flaws first.
The most recent OpenBSD flaw added to the known-exploited list is CVE-2020-7247, on 25 March 2022. We keep watching the known-exploited list.
Which OpenBSD 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 OpenBSD 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%CVE-2024-6387High
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd).
- 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...
- 94%CVE-2023-48795Medium
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension...
- 90%CVE-2023-25136Medium
OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling.
- 89%CVE-2016-6210Medium
sshd in OpenSSH before 7.3, when SHA256 or SHA512 are used for user password hashing, uses BLOWFISH hashing on a static password when the username does not exist, which allows remote attackers to enumerate users by...
- 83%CVE-2005-0356Medium
Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with the timestamps option enabled allow remote attackers to cause a denial of service (connection loss) via a spoofed packet with...
- 80%CVE-2007-5365High
Stack-based buffer overflow in the cons_options function in options.c in dhcpd in OpenBSD 4.0 through 4.2, and some other dhcpd implementations based on ISC dhcp-2, allows remote attackers to execute arbitrary code...
- 80%CVE-2023-38408Critical
The PKCS#11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system.
- 78%CVE-2003-0466Critical
Off-by-one error in the fb_realpath() function, as derived from the realpath function in BSD, may allow attackers to execute arbitrary code, as demonstrated in wu-ftpd 2.5.0 through 2.6.2 via commands that cause...
All OpenBSD products we track.
6 products, most vulnerabilities first. Find the ones you run, then open a product to see its versions and exploited flaws.
- OpenBSDopenbsd203 vulnerabilities58 versions
- OpenSSHopenssh118 vulnerabilities128 versions
- Libressllibressl12 vulnerabilities109 versions
- Opensmtpdopensmtpd3 vulnerabilities7 versions
- Ftpdftpd1 vulnerability2 versions
- Textproc/isearchtextproc\/isearch1 vulnerability1 version
This directory lists the 6 OpenBSD products with at least one tracked version, of 7 in our catalogue.
Running OpenBSD? We'll keep checking.
Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.
- Tell us what you runPick your software from a list, or let us work it out from your website.
- We match it to every flawOver 400,000 published flaws, checked against your list.
- Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
- Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.
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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
- OpenBSD 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.
Our catalogue lists 334 published vulnerabilities across 7 products and 305 versions from OpenBSD. The most recent OpenBSD flaw added to the known-exploited list is CVE-2020-7247, on 25 March 2022.
1 OpenBSD vulnerability is on the list of flaws known to be exploited. The most recently added is CVE-2020-7247. The full list is on this page.
OpenBSD, with 203 published vulnerabilities. Its own page lists the ones known to be exploited.
Create a Precursor Intelligence account and track the OpenBSD products you run. We match them against every published flaw, give each one a risk score from 0 to 100 and tell you as soon as we spot one that affects you, by email, in the app or by webhook.