Filtered by vendor Openbsd
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Total
367 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2026-55655 | 2 Openbsd, Redhat | 2 Openssh, Enterprise Linux | 2026-10-30 | N/A | 5.0 MEDIUM |
| A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack can compromise the confidentiality of forwarded X11 traffic, including sensitive window contents and input, and may allow some manipulation of the forwarded session. | |||||
| CVE-2026-55653 | 2 Openbsd, Redhat | 4 Openssh, Enterprise Linux, Hardened Images and 1 more | 2026-10-30 | N/A | 4.3 MEDIUM |
| 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 validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS). | |||||
| CVE-2026-56099 | 1 Openbsd | 1 Openbsd | 2026-10-26 | N/A | 5.3 MEDIUM |
| OpenBSD before commit 6a23123 (2026-06-18) contains an out-of-bounds read vulnerability in the mpls_do_error function within sys/netmpls/mpls_input.c that allows remote attackers to disclose kernel stack memory by sending crafted MPLS frames with 16 labels and no Bottom-of-Stack bit set. | |||||
| CVE-2026-59999 | 1 Openbsd | 1 Openssh | 2026-10-25 | N/A | 5.9 MEDIUM |
| In sshd in OpenSSH before 10.4, DisableForwarding=yes was supposed to take precedence over PermitTunnel=yes, but did not. | |||||
| CVE-2026-60000 | 1 Openbsd | 1 Openssh | 2026-10-25 | N/A | 3.7 LOW |
| sshd in OpenSSH before 10.4 allows remote attackers to cause a denial of service (resource consumption from excessive authentication attempts) because MaxAuthTries was mishandled for GSSAPIAuthentication. | |||||
| CVE-2026-59998 | 1 Openbsd | 1 Openssh | 2026-10-25 | N/A | 4.8 MEDIUM |
| sshd in OpenSSH before 10.4 has an undocumented security-relevant behavior: GSSAPIStrictAcceptorCheck has no value if the server is in Windows Active Directory. | |||||
| CVE-2026-60001 | 1 Openbsd | 1 Openssh | 2026-10-25 | N/A | 6.5 MEDIUM |
| sshd in OpenSSH before 10.4 does not always honor the minimum authentication delay. | |||||
| CVE-2026-59995 | 1 Openbsd | 1 Openssh | 2026-10-25 | N/A | 4.2 MEDIUM |
| sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server. | |||||
| CVE-2026-59996 | 1 Openbsd | 1 Openssh | 2026-10-25 | N/A | 4.2 MEDIUM |
| scp in OpenSSH before 10.4 may place a file in the parent directory of an intended directory when the copy occurs between two remote destinations. | |||||
| CVE-2026-60002 | 1 Openbsd | 1 Openssh | 2026-10-25 | N/A | 7.7 HIGH |
| ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.) | |||||
| CVE-2026-59997 | 1 Openbsd | 1 Openssh | 2026-10-25 | N/A | 4.2 MEDIUM |
| internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection. | |||||
| CVE-2026-73283 | 1 Openbsd | 1 Openssh | 2026-10-24 | N/A | 2.5 LOW |
| 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-2026-73281 | 1 Openbsd | 1 Openssh | 2026-10-24 | N/A | 3.5 LOW |
| 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-bind@openssh.com extension. | |||||
| CVE-2026-73282 | 1 Openbsd | 1 Openssh | 2026-10-24 | N/A | 4.8 MEDIUM |
| 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-2025-26465 | 4 Debian, Netapp, Openbsd and 1 more | 6 Debian Linux, Active Iq Unified Manager, Ontap and 3 more | 2026-10-21 | N/A | 6.8 MEDIUM |
| 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 codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high. | |||||
| CVE-2025-26466 | 3 Canonical, Debian, Openbsd | 3 Ubuntu Linux, Debian Linux, Openssh | 2026-10-21 | N/A | 5.9 MEDIUM |
| 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 malicious client may keep sending such packages, leading to an uncontrolled increase in memory consumption on the server side. Consequently, the server may become unavailable, resulting in a denial of service attack. | |||||
| CVE-2026-106585 | 1 Openbsd | 1 Openssh | 2026-10-15 | N/A | 6.5 MEDIUM |
| In sshd and ssh in OpenSSH before 10.6, there is no check for whether the maximum packet length is exceeded during decompression of highly compressed data. | |||||
| CVE-2026-106583 | 1 Openbsd | 1 Openssh | 2026-10-15 | N/A | 2.5 LOW |
| In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection. | |||||
| CVE-2024-6387 | 13 Almalinux, Amazon, Apple and 10 more | 81 Almalinux, Amazon Linux, Macos and 78 more | 2026-10-15 | N/A | 8.1 HIGH |
| 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 failing to authenticate within a set time period. | |||||
| CVE-2026-3497 | 4 Canonical, Debian, Openbsd and 1 more | 4 Ubuntu Linux, Debian Linux, Openssh and 1 more | 2026-10-15 | N/A | 7.5 HIGH |
| Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpkt_disconnect() on an error, which does not terminate the process, allows an attacker to send an unexpected GSSAPI message type during the GSSAPI key exchange to the server, which will call the underlying function and continue the execution of the program without setting the related connection variables. As the variables are not initialized to NULL the code later accesses those uninitialized variables, accessing random memory, which could lead to undefined behavior. The recommended workaround is to use ssh_packet_disconnect() instead, which does terminate the process. The impact of the vulnerability depends heavily on the compiler flag hardening configuration. | |||||