OpenSSH
by OpenSSH
Source repositories
CVEs (65)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2021-36368 | Low | 0.24 | 3.7 | 0.02 | Mar 13, 2022 | An issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=verbose, and an attacker has silently modified the server to support the None authentication option, then the user cannot determine whether… | ||
| CVE-2026-73281 | Low | 0.23 | 3.5 | 0.00 | Aug 11, 2026 | 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 [email protected] extension. | ||
| CVE-2026-35386 | Low | 0.23 | 3.6 | 0.00 | Apr 2, 2026 | 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 configurations of % in ssh_config. | ||
| CVE-2025-61985 | Low | 0.23 | 3.6 | 0.00 | Oct 6, 2025 | 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-2025-61984 | Low | 0.23 | 3.6 | 0.00 | Oct 6, 2025 | 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 %-sequence expansion of a configuration… | ||
| CVE-2026-59997 | Med | 0.20 | 4.2 | 0.00 | Jul 8, 2026 | 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-2026-59996 | Med | 0.20 | 4.2 | 0.00 | Jul 8, 2026 | 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-2026-59995 | Med | 0.20 | 4.2 | 0.00 | Jul 8, 2026 | 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-2026-35387 | Low | 0.20 | 3.1 | 0.00 | Apr 2, 2026 | OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms. | ||
| CVE-2026-60000 | Low | 0.17 | 3.7 | 0.00 | Jul 8, 2026 | 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-2026-35388 | Low | 0.16 | 2.5 | 0.00 | Apr 2, 2026 | OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions. | ||
| CVE-2015-6565 | 0.03 | — | 0.03 | Aug 24, 2015 | sshd in OpenSSH 6.8 and 6.9 uses world-writable permissions for TTY devices, which allows local users to cause a denial of service (terminal disruption) or possibly have unspecified other impact by writing to a device, as demonstrated by writing an escape sequence. | |||
| CVE-2010-4755 | 0.01 | — | 0.08 | Mar 2, 2011 | The (1) remote_glob function in sftp-glob.c and the (2) process_put function in sftp.c in OpenSSH 5.8 and earlier, as used in FreeBSD 7.3 and 8.1, NetBSD 5.0.2, OpenBSD 4.7, and other products, allow remote authenticated users to cause a denial of service (CPU and memory… | |||
| CVE-2025-32728 | Med | 0.00 | 4.3 | 0.00 | Apr 10, 2025 | In sshd in OpenSSH before 10.0, the DisableForwarding directive does not adhere to the documentation stating that it disables X11 and agent forwarding. | ||
| CVE-2021-28041 | Hig | 0.00 | 7.1 | 0.03 | Mar 5, 2021 | ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host. | ||
| CVE-2020-14145 | Med | 0.00 | 5.9 | 0.02 | Jun 29, 2020 | The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).… | ||
| CVE-2020-12062 | Hig | 0.00 | 7.5 | 0.02 | Jun 1, 2020 | The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory… | ||
| CVE-2018-20685 | Med | 0.00 | 5.3 | 0.04 | Jan 10, 2019 | In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side. | ||
| CVE-2011-5000 | 0.00 | — | 0.03 | Apr 5, 2012 | The ssh_gssapi_parse_ename function in gss-serv.c in OpenSSH 5.8 and earlier, when gssapi-with-mic authentication is enabled, allows remote authenticated users to cause a denial of service (memory consumption) via a large value in a certain length field. NOTE: there may be… | |||
| CVE-2008-3259 | 0.00 | — | 0.00 | Jul 22, 2008 | OpenSSH before 5.1 sets the SO_REUSEADDR socket option when the X11UseLocalhost configuration setting is disabled, which allows local users on some platforms to hijack the X11 forwarding port via a bind to a single IP address, as demonstrated on the HP-UX platform. |
- risk 0.24cvss 3.7epss 0.02
An issue was discovered in OpenSSH before 8.9. If a client is using public-key authentication with agent forwarding but without -oLogLevel=verbose, and an attacker has silently modified the server to support the None authentication option, then the user cannot determine whether…
- risk 0.23cvss 3.5epss 0.00
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 [email protected] extension.
- risk 0.23cvss 3.6epss 0.00
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 configurations of % in ssh_config.
- risk 0.23cvss 3.6epss 0.00
ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used.
- risk 0.23cvss 3.6epss 0.00
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 %-sequence expansion of a configuration…
- risk 0.20cvss 4.2epss 0.00
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.
- risk 0.20cvss 4.2epss 0.00
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.
- risk 0.20cvss 4.2epss 0.00
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.
- risk 0.20cvss 3.1epss 0.00
OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.
- risk 0.17cvss 3.7epss 0.00
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.
- risk 0.16cvss 2.5epss 0.00
OpenSSH before 10.3 omits connection multiplexing confirmation for proxy-mode multiplexing sessions.
- CVE-2015-6565Aug 24, 2015risk 0.03cvss —epss 0.03
sshd in OpenSSH 6.8 and 6.9 uses world-writable permissions for TTY devices, which allows local users to cause a denial of service (terminal disruption) or possibly have unspecified other impact by writing to a device, as demonstrated by writing an escape sequence.
- CVE-2010-4755Mar 2, 2011risk 0.01cvss —epss 0.08
The (1) remote_glob function in sftp-glob.c and the (2) process_put function in sftp.c in OpenSSH 5.8 and earlier, as used in FreeBSD 7.3 and 8.1, NetBSD 5.0.2, OpenBSD 4.7, and other products, allow remote authenticated users to cause a denial of service (CPU and memory…
- risk 0.00cvss 4.3epss 0.00
In sshd in OpenSSH before 10.0, the DisableForwarding directive does not adhere to the documentation stating that it disables X11 and agent forwarding.
- risk 0.00cvss 7.1epss 0.03
ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.
- risk 0.00cvss 5.9epss 0.02
The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).…
- risk 0.00cvss 7.5epss 0.02
The scp client in OpenSSH 8.2 incorrectly sends duplicate responses to the server upon a utimes system call failure, which allows a malicious unprivileged user on the remote server to overwrite arbitrary files in the client's download directory by creating a crafted subdirectory…
- risk 0.00cvss 5.3epss 0.04
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side.
- CVE-2011-5000Apr 5, 2012risk 0.00cvss —epss 0.03
The ssh_gssapi_parse_ename function in gss-serv.c in OpenSSH 5.8 and earlier, when gssapi-with-mic authentication is enabled, allows remote authenticated users to cause a denial of service (memory consumption) via a large value in a certain length field. NOTE: there may be…
- CVE-2008-3259Jul 22, 2008risk 0.00cvss —epss 0.00
OpenSSH before 5.1 sets the SO_REUSEADDR socket option when the X11UseLocalhost configuration setting is disabled, which allows local users on some platforms to hijack the X11 forwarding port via a bind to a single IP address, as demonstrated on the HP-UX platform.
Page 3 of 4