Total
45 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2025-5987 | 1 Libssh | 1 Libssh | 2026-10-16 | N/A | 8.1 HIGH |
| A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes. | |||||
| CVE-2023-48795 | 42 9bis, Apache, Apple and 39 more | 68 Kitty, Sshd, Sshj and 65 more | 2026-10-15 | N/A | 5.9 MEDIUM |
| 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 negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust. | |||||
| CVE-2025-14821 | 2 Libssh, Redhat | 2 Libssh, Hardened Images | 2026-10-14 | N/A | 7.8 HIGH |
| A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the C:\etc directory, which can be created and modified by unprivileged local users. | |||||
| CVE-2026-59849 | 2 Libssh, Redhat | 11 Libssh, Enterprise Linux, Enterprise Linux For Els and 8 more | 2026-09-22 | N/A | 3.1 LOW |
| A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly rejected by a server, leading to denial of service. | |||||
| CVE-2026-59842 | 2 Libssh, Redhat | 11 Libssh, Enterprise Linux, Enterprise Linux For Els and 8 more | 2026-09-22 | N/A | 3.7 LOW |
| A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory. | |||||
| CVE-2026-15370 | 2 Libssh, Redhat | 11 Libssh, Enterprise Linux, Enterprise Linux For Els and 8 more | 2026-09-22 | N/A | 6.7 MEDIUM |
| A flaw was found in libssh. During SFTP server directory listing, the longname field is constructed with unsafe concatenation into a fixed-size stack buffer. When a client causes the server to list attacker-controlled filenames, sufficiently long names can overflow that stack buffer and may lead to crashes or possible code execution on the server. | |||||
| CVE-2025-5318 | 2 Libssh, Redhat | 3 Libssh, Enterprise Linux, Openshift Container Platform | 2026-09-08 | N/A | 5.4 MEDIUM |
| A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftp_handle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in further processing. This vulnerability allows an authenticated remote attacker to potentially read unintended memory regions, exposing sensitive information or affect service behavior. | |||||
| CVE-2026-59847 | 2 Libssh, Redhat | 3 Libssh, Enterprise Linux, Hardened Images | 2026-09-04 | N/A | 5.9 MEDIUM |
| A flaw was found in libssh. Incorrect AES-GCM finalization checks in builds using the OpenSSL backend can effectively remove integrity protection, allowing an in-path attacker to modify plaintext on the wire without detection. | |||||
| CVE-2026-59850 | 2 Libssh, Redhat | 3 Libssh, Enterprise Linux, Hardened Images | 2026-09-01 | N/A | 4.3 MEDIUM |
| A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions. | |||||
| CVE-2026-59848 | 2 Libssh, Redhat | 3 Libssh, Enterprise Linux, Hardened Images | 2026-09-01 | N/A | 5.3 MEDIUM |
| A flaw was found in libssh. A malicious SFTP server can send responses for unknown request IDs that libssh clients keep queued indefinitely, causing unbounded memory growth and client-side denial of service. | |||||
| CVE-2026-59846 | 2 Libssh, Redhat | 3 Libssh, Enterprise Linux, Hardened Images | 2026-09-01 | N/A | 3.9 LOW |
| A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior. | |||||
| CVE-2026-59845 | 2 Libssh, Redhat | 3 Libssh, Enterprise Linux, Hardened Images | 2026-09-01 | N/A | 5.3 MEDIUM |
| A flaw was found in libssh. When ProxyCommand is used, an unchecked fork() failure can be stored as process ID -1; during cleanup, signals may then be sent across the caller's accessible process tree, leading to local denial of service. | |||||
| CVE-2026-59844 | 2 Libssh, Redhat | 3 Libssh, Enterprise Linux, Hardened Images | 2026-09-01 | N/A | 6.5 MEDIUM |
| A flaw was found in libssh. A remote authenticated client can issue SSH_FXP_READ requests with an arbitrarily large length, causing a libssh SFTP server to allocate excessive memory and potentially exhaust it through repeated requests. | |||||
| CVE-2026-59843 | 2 Libssh, Redhat | 3 Libssh, Enterprise Linux, Hardened Images | 2026-09-01 | N/A | 6.5 MEDIUM |
| A flaw was found in libssh. A remote authenticated peer can advertise a zero maximum packet size in SSH_MSG_CHANNEL_OPEN, causing later channel writes to loop indefinitely and consume CPU, leading to denial of service. | |||||
| CVE-2026-0968 | 2 Libssh, Redhat | 2 Libssh, Enterprise Linux | 2026-09-01 | N/A | 3.1 LOW |
| A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes. | |||||
| CVE-2026-0967 | 2 Libssh, Redhat | 2 Libssh, Enterprise Linux | 2026-09-01 | N/A | 5.5 MEDIUM |
| A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client. | |||||
| CVE-2026-0965 | 2 Libssh, Redhat | 2 Libssh, Enterprise Linux | 2026-09-01 | N/A | 3.3 LOW |
| A flaw was found in libssh where it can attempt to open arbitrary files during configuration parsing. A local attacker can exploit this by providing a malicious configuration file or when the system is misconfigured. This vulnerability could lead to a Denial of Service (DoS) by causing the system to try and access dangerous files, such as block devices or large system files, which can disrupt normal operations. | |||||
| CVE-2026-0966 | 2 Libssh, Redhat | 4 Libssh, Enterprise Linux, Hardened Images and 1 more | 2026-09-01 | N/A | 8.2 HIGH |
| A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process. | |||||
| CVE-2026-0964 | 2 Libssh, Redhat | 4 Libssh, Enterprise Linux, Hardened Images and 1 more | 2026-09-01 | N/A | 6.3 MEDIUM |
| A malicious SCP server can send unexpected paths that could make the client application override local files outside of working directory. This could be misused to create malicious executable or configuration files and make the user execute them under specific consequences. This is the same issue as in OpenSSH, tracked as CVE-2019-6111. | |||||
| CVE-2025-8114 | 1 Libssh | 1 Libssh | 2026-09-01 | N/A | 4.7 MEDIUM |
| A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash. | |||||