Vendor
OpenBSD vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 31 vulnerabilities in OpenBSD: 0 in the last 7 days and 9 in the last 90 days, 3 of them critical and 1 exploited in the wild. The most recent, CVE-2026-56101, was published on 8 September 2026. 2 technologies have a page of their own.
- Last 7 days
- 0
- Last 90 days
- 9
- Critical, all time
- 3
- Exploited in the wild
- 1
About OpenBSD
The OpenBSD project produces a free, multi-platform 4.4BSD-based UNIX-like operating system and various security-focused software tools.
OpenBSD technologies
Latest OpenBSD vulnerabilities
- CVE-2026-56101: OpenBSD TKIP MIC-failure countermeasure inverted comparisonmediumCVSS 5.3EPSS 0.6%
- CVE-2026-60002: OpenSSH use-after-free in ssh client during key re-exchangehighCVSS 7.7
- CVE-2026-60001: OpenSSH sshd failure to enforce minimum authentication delaymediumCVSS 6.5
- CVE-2026-60000: OpenBSD OpenSSH denial of service in GSSAPIAuthenticationlowCVSS 3.7
- CVE-2026-59999: OpenSSH sshd configuration bypass in DisableForwarding directivemediumCVSS 5.9
- CVE-2026-59998: OpenSSH sshd GSSAPIStrictAcceptorCheck bypass in Active DirectorymediumCVSS 4.8
- CVE-2026-59997: OpenSSH internal-sftp argument truncation in sshdmediumCVSS 4.2
- CVE-2026-59996: OpenBSD OpenSSH path traversal in scp remote-to-remote copymediumCVSS 4.2
- CVE-2026-59995: OpenBSD OpenSSH path traversal in sftp clientmediumCVSS 4.2
- CVE-2026-57589: OpenBSD use-after-free in System V semaphore implementationhighCVSS 7.4
- CVE-2026-56099: OpenBSD kernel stack memory disclosure in mpls_do_errormediumCVSS 5.3
- CVE-2026-55706: OpenBSD auth bypass and heap over-read in sppp_pap_inputmediumCVSS 5.8EPSS 0.2%
- CVE-2026-35414: OpenBSD OpenSSH incorrect principal matching in sshd via authorized_keysmediumCVSS 4.2EPSS 0.2%
- CVE-2026-35388: OpenSSH connection multiplexing confirmation bypass in proxy modelowCVSS 2.5EPSS 0.1%
- CVE-2026-35387: OpenSSH unintended ECDSA algorithm acceptance in sshd configlowCVSS 3.1EPSS 0.2%
- CVE-2026-35386: OpenSSH command injection via shell metacharacters in usernamelowCVSS 3.6EPSS 0.3%
- CVE-2026-35385: OpenSSH scp improper permission preservation in legacy modehighCVSS 7.5EPSS 0.3%
- CVE-2026-3497: OpenSSH GSSAPI uninitialized variable use in Linux distributionshighCVSS 7.5EPSS 0.1%
- CVE-2025-61985: OpenSSH code execution via null byte injection in ssh URIslowCVSS 3.6EPSS 0.1%
- CVE-2025-61984: OpenSSH code execution via control characters in ProxyCommand usernameslowCVSS 3.6EPSS 0.2%
- CVE-2025-26465: OpenBSD OpenSSH MitM via VerifyHostKeyDNS error mishandlingmediumCVSS 6.8
- CVE-2023-51384: OpenSSH ssh-agent incomplete destination constraints for PKCS#11 keysmediumCVSS 5.5
- CVE-2023-28531: OpenSSH ssh-add destination constraint bypass for smartcard keyscriticalCVSS 9.8
- CVE-2020-7247: OpenSMTPD Remote Code Execution Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-2021-41617: OpenSSH privilege escalation in AuthorizedKeysCommand helper programshighCVSS 7
Most severe OpenBSD vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2020-7247: OpenSMTPD Remote Code Execution Vulnerabilitycriticalexploited in the wildCVSS 9.8
- CVE-1999-0323: FreeBSD and NetBSD file integrity bypass in mmap functioncriticalCVSS 10
- CVE-2023-28531: OpenSSH ssh-add destination constraint bypass for smartcard keyscriticalCVSS 9.8
- CVE-2026-60002: OpenSSH use-after-free in ssh client during key re-exchangehighCVSS 7.7
- CVE-2026-35385: OpenSSH scp improper permission preservation in legacy modehighCVSS 7.5EPSS 0.3%
- CVE-2026-3497: OpenSSH GSSAPI uninitialized variable use in Linux distributionshighCVSS 7.5EPSS 0.1%
- CVE-2026-57589: OpenBSD use-after-free in System V semaphore implementationhighCVSS 7.4
- CVE-1999-0304: BSD mmap memory modification via kmem deviceshighCVSS 7.2
- CVE-1999-1296: MIT Kerberos buffer overflow in Kerberos IV compatibility libraryhighCVSS 7.2
- CVE-2021-41617: OpenSSH privilege escalation in AuthorizedKeysCommand helper programshighCVSS 7
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 8 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 1 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/openbsd.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "OpenBSD vulnerabilities", https://junglewise.ai/threats/vendors/openbsd, 26 September 2026.