OpenBSD has 16 CVEs on record between 2021 and 2026. Cadence is steady at roughly 4 per quarter. The busiest recent month was August 2026 with 3. The median CVSS is 5.4 (medium), with 1 rated critical. None have a confirmed exploitation report. Most affected products: openssh (14), OpenBSD (2).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 5.4
- Publish → KEV
- —
- Last 90 days
- 4 prev 4
Weakness classes
Products
- openssh 14
- OpenBSD 2
Worst active — by depth score
CVE-2024-6387High· 8.1A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd)76CVE-2023-28531Critical· 9.8ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints54CVE-2025-26466Medium· 5.9A flaw was found in the OpenSSH package52CVE-2025-26465Medium· 6.8A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled51CVE-2021-41617High· 7.0sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected51
OpenBSD vulnerabilities
CVEs affecting OpenBSD, newest first. Open any entry for full detail, references, and exploit status.
16 CVEsRSS
CVE-2026-56101Medium· 5.3PoCOpenBSD before commit 1ee99df contains an inverted comparison vulnerability in the ieee80211_michael_mic_failure() function within sys/net80211/ieee80211_crypto_tkip.c that allows unauthenticated attackers within RF range to trigger deni…
OpenBSD before commit 1ee99df contains an inverted comparison vulnerability in the ieee80211_michael_mic_failure() function within sys/net80211/ieee80211_crypto_tkip.c that allows unauthenticated attackers within RF range to trigger deni…
CVE-2026-73283Low· 2.5⚖ disputedIn sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.
In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.
CVE-2026-73282Medium· 4.8In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.
In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations are concurrent.
CVE-2026-73281Low· 3.5In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys
In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the session-bin…
CVE-2026-55653Medium· 4.3A flaw was found in OpenSSH
A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group va…
CVE-2026-55706Medium· 5.8sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.
CVE-2026-35386Low· 3.6In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line
In OpenSSH before 10.3, command execution can occur via shell metacharacters in a username within a command line. This requires a scenario where the username on the command line is untrusted, and also requires a non-default configuration…
CVE-2026-35385High· 7.5In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).
In OpenSSH before 10.3, a file downloaded by scp may be installed setuid or setgid, an outcome contrary to some users' expectations, if the download is performed as root with -O (legacy scp protocol) and without -p (preserve mode).
CVE-2025-61985Low· 3.6ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used.
ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used.
CVE-2025-61984Low· 3.6PoCssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used
ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used. The untrusted sources are the command line and %…
CVE-2025-26466Medium· 5.9PoCA flaw was found in the OpenSSH package
A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memory buffer and stored in a queue of packages. It is only freed when the server/client key exchange has finished. A …
CVE-2025-26465Medium· 6.8PoCA vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled
A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error …
CVE-2024-6387High· 8.1PoCA security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd)
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by f…
CVE-2023-51384Medium· 5.5In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied
In ssh-agent in OpenSSH before 9.6, certain destination constraints can be incompletely applied. When destination constraints are specified during addition of PKCS#11-hosted private keys, these constraints are only applied to the first k…
CVE-2023-28531Critical· 9.8ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints
ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.
CVE-2021-41617High· 7.0PoCsshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected
sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and Authoriz…