SSH

Path traversal in SSH.NET's ScpClient.Download() enables a malicious, compromised, or man-in-the-middle SCP server to write arbitrary files anywhere the client process has write access during recursive directory downloads. All SSH.NET NuGet package versions up to and including 2025.1.0 are affected; the vulnerability is analogous to CVE-2019-6111 in OpenSSH but extends to directory traversal. No public exploit code or CISA KEV listing has been identified at time of analysis, though the integrity impact is high given the file-write primitive can overwrite SSH authorized keys, shell rc files, or application binaries.

OpenSSH sshd before version 10.5 fails to enforce the `restrict` keyword in `authorized_keys` against tunnel forwarding, allowing a constrained SSH key holder to establish tun-device tunnels that the administrator explicitly intended to block. The flaw affects all OpenSSH releases prior to 10.5 and is classified as a policy-enforcement bypass with low integrity impact. No active exploitation is confirmed per SSVC (exploitation: none) and the vulnerability is absent from the CISA KEV catalog, placing this firmly in the low-urgency tier despite OpenSSH's near-ubiquitous deployment footprint.

Use-after-free (CWE-416) in OpenSSH's ssh client component affects all releases before version 10.5, triggered when a specific pair of remote-forwarding operations occur concurrently, causing access to freed realloc'd memory. A malicious or compromised SSH server could exploit this race condition against a connecting client to achieve partial information disclosure or limited memory corruption. No public exploit has been identified and CISA SSVC rates exploitation as none with partial technical impact, consistent with the moderate CVSS score of 4.8.

OpenSSH ssh-agent before version 10.5 permits remote execution of agent operations - including adding authentication tokens and using SSH keys - that were architecturally intended to be restricted to local access only. The trust boundary failure stems from a misinteraction between the agent locking mechanism and the session-bind@openssh.com extension, allowing an authenticated remote actor to cross the local/remote privilege boundary. No public exploit has been identified at time of analysis, and SSVC assessment confirms no current exploitation activity; however, the network-accessible vector and ubiquitous deployment footprint of OpenSSH make patching to 10.5 the appropriate response for any environment using agent forwarding.

Path traversal in rclone's `serve restic` REST API allows any attacker with network access to the endpoint to read, create, overwrite, or delete objects outside the operator-configured backend directory. The flaw spans rclone v1.40 through v1.74.4 and affects WebDAV, FTP, SFTP, HTTP, and Memory backends - but not S3-compatible or local filesystem backends, which encode `..` as literal filename characters. A fully functional, step-by-step proof of concept has been publicly released; no CISA KEV listing exists at time of analysis.

Command-restriction bypass in Apache MINA SSHD (server-side) lets a user who authenticates with an OpenSSH user certificate carrying a force-command directive execute arbitrary commands instead of the single restricted command the certificate authority intended. The server accepts and honors such certificates but silently ignores the force-command and verify-required options, breaking the security model that certificate issuers rely on to constrain principals. No public exploit identified at time of analysis and it is not listed in CISA KEV, but the flaw is confirmed and fixed by the Apache Software Foundation in versions 2.19.0 and 3.0.0-M5.

Argument injection in bosh-cli versions before v7.10.4 lets a compromised or malicious BOSH Director inject arbitrary OpenSSH command-line options into the ssh process that the CLI spawns locally, achieving code execution on the operator's own workstation. It triggers during non-interactive SSH paths such as bosh ssh -c, bosh logs -f, and similar flows where the CLI builds an ssh command from Director-supplied data. No public exploit is identified at time of analysis, and it is not listed in CISA KEV; the CVSS 4.0 base score is 7.7 (High).

Memory corruption in the OpenSSH client (ssh) before 10.4 lets a malicious or compromised SSH server trigger a use-after-free on the connecting client by changing its host key during a key re-exchange (rekey), potentially leading to information disclosure or code execution in the client process. Only the client side is affected; the server is not vulnerable. There is no public exploit identified at time of analysis and it is not on CISA KEV, and EPSS is low (0.25%, 16th percentile), but the flaw is fixed in OpenSSH 10.4/10.4p1.

OpenSSH sshd before version 10.4 fails to consistently enforce its built-in minimum authentication delay, undermining the rate-limiting defense designed to slow credential-guessing attacks against SSH services. All OpenSSH releases prior to 10.4 are affected across all platforms, enabling unauthenticated remote attackers to submit authentication attempts at a rate higher than the daemon intends to permit. No public exploit code has been identified and the vulnerability is absent from CISA KEV; however, the trivial attack complexity combined with OpenSSH's near-universal deployment footprint makes prompt patching appropriate.

Denial of service in OpenSSH sshd before 10.4 lets remote unauthenticated attackers exhaust server resources by driving excessive authentication attempts, because the MaxAuthTries cap was not correctly enforced for the GSSAPIAuthentication path. Only deployments that have enabled GSSAPI-based authentication are exposed, and there is no public exploit identified at time of analysis. EPSS is low (0.34%, 26th percentile) and CISA SSVC records no observed exploitation, so this is a real but non-urgent availability issue rather than a code-execution threat.

Security-control bypass in OpenSSH sshd before 10.4 causes the DisableForwarding=yes hardening directive to be silently ignored when PermitTunnel=yes is also set, so tun-device forwarding remains available despite an administrator's explicit policy to disable all forwarding. Affected operators are those who rely on DisableForwarding as a defense-in-depth restriction; the flaw lets an authenticated user establish layer-2/3 tunnels the configuration was meant to forbid. There is no public exploit identified at time of analysis, EPSS is low (0.13%, 3rd percentile), and it is not on CISA KEV.

OpenSSH sshd before version 10.4 silently ignores the GSSAPIStrictAcceptorCheck configuration directive when the server is integrated with Windows Active Directory, defeating a security control that administrators rely on to enforce GSSAPI acceptor name validation during Kerberos-based SSH authentication. This undocumented behavior means AD-joined SSH servers may accept GSSAPI authentications against unintended Kerberos service principals regardless of how the option is configured, yielding limited confidentiality and integrity impact. No public exploits or active exploitation have been identified; the CVSS AC:H rating reflects the specific environmental prerequisites required for exploitation.

OpenSSH's internal-sftp subsystem silently discards all command-line arguments beyond position 9, allowing authenticated SFTP users to bypass security restrictions that administrators intended to enforce via those later-positioned arguments. All OpenSSH releases before 10.4 are affected when sshd_config supplies more than nine arguments to the internal-sftp subsystem, which is a non-default but legitimate administrative pattern used for directory restriction, read-only enforcement, and umask control. No public exploit has been identified and this vulnerability is not listed in the CISA KEV catalog; however, sites relying on complex internal-sftp argument chains for access policy enforcement face a direct, silent policy bypass.

Path traversal in the scp utility of OpenSSH before 10.4 causes files to be written into the parent directory of the intended destination during remote-to-remote copy operations. The root cause is CWE-23 (Relative Path Traversal): scp fails to canonicalize or sanitize paths when relaying data between two remote hosts, allowing an attacker controlling a malicious endpoint to influence where transferred files land. No public exploit identified at time of analysis, and active exploitation has not been confirmed by CISA KEV; the CVSS AC:H and UI:R metrics significantly constrain real-world exploitability.

Path traversal in the OpenSSH sftp client before version 10.4p1 allows an attacker-controlled server to write downloaded files outside the user's intended target directory when the 'sftp server:/path .' bulk-download syntax is used. Affected are all OpenSSH deployments where users sftp from untrusted or attacker-controlled hosts, which in practice spans virtually every Linux and Unix environment. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV, though the ubiquity of OpenSSH elevates aggregate exposure despite the moderate per-instance severity.

OpenSSH's GSSAPI authentication cleanup routine contains a heap out-of-bounds read (CWE-125) triggered when the auth-indicators array lacks a trailing NULL terminator, allowing a remote unauthenticated attacker to crash the SSH authentication path and deny SSH service availability. Exploitation is constrained by high attack complexity (AC:H) due to the non-default Kerberos/GSSAPI configuration requirement, limiting real-world exposure to a minority of deployments. No active exploitation is confirmed (not in CISA KEV), no public exploit code has been identified, and the impact is restricted to partial availability loss with no confidentiality or integrity consequence.

X11 forwarding session hijacking in OpenSSH enables a local unprivileged attacker sharing a Linux client host to intercept and partially manipulate the victim's forwarded X11 display traffic by squatting on the predictable abstract UNIX domain socket name before the SSH client creates it. Affected deployments span OpenSSH packages across Red Hat Enterprise Linux 6 through 10, Red Hat Hardened Images, and OpenShift Container Platform 4. No public exploit code has been identified at time of analysis, but successful exploitation yields high-confidence access to sensitive X11 session data including keystrokes, window contents, and clipboard material.

Client-side Denial of Service in OpenSSH's Diffie-Hellman Group Exchange implementation allows a malicious SSH server to crash connecting clients running in FIPS mode. When a victim initiates an SSH connection to an attacker-controlled server, the server sends crafted DH-GEX group parameters that trigger a double free (CWE-415) during FIPS known-group validation, terminating the client process. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in CISA KEV; however, the constraint that only FIPS-mode clients are affected limits real-world impact to regulated or government environments.

Resource exhaustion in Russh's SSH server identification-string reader allows unauthenticated remote attackers to hold connection setup resources indefinitely during the cleartext pre-authentication phase. Russh versions 0.34.0-beta.1 through 0.60.x used the same permissive identification reader for both client and server roles, failing to cap the number of pre-banner lines a connecting client could send before the SSH identification string - a constraint OpenSSH enforces strictly per RFC 4253. Any application serving SSH via russh is exposed to this pre-auth resource-holding condition. No public exploit code has been identified at time of analysis, and the vulnerability is not listed in CISA KEV.

Remote denial-of-service in russh, a Rust implementation of the SSH protocol, allows unauthenticated remote attackers to exhaust server memory by sending small compressed SSH packets that inflate to massive sizes post-decompression. Affecting all versions from 0.34.0 through 0.61.0, the flaw stems from missing post-decompression size enforcement in Decompress::decompress(), allowing payloads under the 256 KiB wire cap to expand beyond 128 MiB. No public exploit identified at time of analysis, but the advisory includes a detailed PoC demonstrating pre-authentication exploitation against default server configurations.

SSH public-key authentication bypass in AsyncSSH 2.22.0 (Python pip package) allows remote attackers to log in as another identity when the server uses the OpenSSH-style per-user pattern 'AuthorizedKeysFile authorized_keys/%u'. Because the %u token is expanded from the raw SSH username without rejecting '/', '\', or '..', an attacker supplying a traversal username (e.g. '../../../attacker.pub') forces the server to read an authorized-keys file outside the intended directory; if that file contains the attacker's public key, authentication succeeds. Publicly available proof-of-concept exploit code exists (harness plus exploit script in the advisory), but there is no public exploit identified as being used in the wild and the issue is not in CISA KEV; EPSS is low at 0.22%.

Authentication bypass in the Go x/crypto/ssh library (versions before 0.52.0) allows SSH servers to accept FIDO/U2F security key signatures that were generated without the required physical user touch. The Verify() method for sk-ecdsa-sha2-nistp256@openssh.com and sk-ssh-ed25519@openssh.com key types failed to check the User Presence flag, enabling unattended use of stolen or relayed hardware-token signatures. No public exploit identified at time of analysis and EPSS is very low (0.01%), but SSVC rates technical impact as total with automatable exploitation.

Constraint extension stripping in the golang.org/x/crypto SSH agent client (versions prior to 0.52.0) allows remote SSH hosts to use forwarded keys without the destination restrictions the user intended. When clients added keys to a remote agent, extensions such as restrict-destination-v00@openssh.com were silently dropped during serialization, effectively converting scoped keys into unrestricted ones on downstream hosts. No public exploit identified at time of analysis and EPSS is very low (0.02%), but SSVC rates technical impact as total and automatable.

Denial-of-service via unchecked memory allocation in russh (Rust SSH library) versions <= 0.60.2 allows local SSH agent peers to trigger uncontrolled buffer growth by sending oversized frame length values, and in pre-0.58.0 releases the same CryptoVec allocation path was reachable from remote SSH transport and zlib decompression buffers. The flaw stems from CryptoVec performing unchecked capacity growth, unchecked length arithmetic, and unsafe allocation/locking calls including NonNull::new_unchecked on potentially failed allocations, which can abort the process under memory pressure. Publicly available exploit code exists in the form of researcher-supplied PoC tests demonstrating both rejection on patched code and crash behavior on historical versions; no public exploit identified at time of analysis for active campaigns and the issue is not listed in CISA KEV.

Remote code execution in Kopia backup server (≤ 0.22.3) allows unauthenticated attackers to run arbitrary OS commands as the Kopia process user via a single HTTP request to /api/v1/repo/exists when the server is launched with --without-password. Publicly available exploit code exists through the published GHSA advisory and PR diff; no public exploit identified at time of analysis as being weaponized in the wild, but the trivially exploitable vector (CVSS 9.8) and detailed write-up make weaponization straightforward. The bug stems from naive space-splitting of attacker-controlled sshArguments that is fed to exec.CommandContext("ssh"), letting an -oProxyCommand= token trigger $SHELL -c execution before any SSH transport is established.

Path traversal in Pipecat's development runner allows unauthenticated remote attackers to read arbitrary files when the --folder flag is used. The /files/{filename:path} endpoint fails to validate paths containing %2F-encoded directory separators, bypassing Starlette's URL normalization. Fixed in version 1.2.0 with no public exploit identified at time of analysis.

OpenSSH before 10.3 fails to confirm connection multiplexing in proxy-mode sessions, allowing local attackers with user interaction to bypass intended access controls and potentially manipulate multiplexed connections. The vulnerability affects OpenSSH versions prior to 10.3p1 and requires local access with user interaction (UI:R) on the affected system; while the CVSS score is low (2.5) and integrity impact is limited, the omission of confirmation mechanisms in proxy-mode multiplexing creates a logic flaw that could enable unauthorized session hijacking or redirection in multi-user environments.

OpenSSH before 10.3 incorrectly interprets ECDSA algorithm specifications in PubkeyAcceptedAlgorithms and HostbasedAcceptedAlgorithms configuration options, allowing authenticated users to authenticate using unintended ECDSA variants. The vulnerability requires authenticated network access and high attack complexity, resulting in a low CVSS score of 3.1 with integrity impact but no confidentiality or availability loss. No public exploit code or active exploitation has been documented.

Argument/command injection in OpenSSH before 10.3 lets shell metacharacters embedded in an untrusted username trigger command execution on the SSH-client host. It affects deployments that both feed an attacker-influenced username to the ssh command line and use a non-default ssh_config where %-token expansion (e.g. in ProxyCommand/LocalCommand) is enabled. There is no public exploit identified at time of analysis, EPSS is negligible (0.01%), and it is not in CISA KEV; a fixed release (10.3/10.3p1) is available.

OpenSSH before version 10.3 mishandles the authorized_keys principals option when a principals list is combined with a Certificate Authority that uses certain comma character patterns, allowing authenticated local or remote users to disclose sensitive authorization information or manipulate authentication decisions. This vulnerability affects all OpenSSH versions prior to 10.3p1 and requires authenticated access (PR:L) with non-trivial attack complexity (AC:H), resulting in partial confidentiality and integrity impact. No public exploit code or active exploitation has been identified at time of analysis.

Privilege-escalation exposure in OpenSSH before 10.3 (fixed in 10.3p1) where scp, when run by root using the legacy SCP protocol flag -O and without -p (preserve mode), may write a downloaded file with setuid or setgid bits set, contrary to user expectation. A malicious or compromised SSH server (or a man-in-the-middle on the transfer) could thereby cause an attacker-controlled binary to land on disk as a setuid/setgid-root executable, enabling local privilege escalation when it is later run. There is no public exploit identified at time of analysis, EPSS is very low (0.04%), and CISA SSVC rates exploitation as 'none' though technical impact as 'total'.

SCP client implementations across Red Hat Enterprise Linux 6-10 and OpenShift Container Platform 4 are vulnerable to path traversal during file transfer, allowing a malicious SCP server to write files outside the designated working directory and potentially execute arbitrary code or modify system configuration. This vulnerability mirrors CVE-2019-6111 in OpenSSH; unauthenticated remote attackers can exploit it with high user interaction (the victim must initiate an SCP connection to a malicious server), resulting in confidentiality, integrity, and availability compromise. No public exploit code or active exploitation has been confirmed at the time of analysis.

A remote code execution vulnerability (CVSS 6.9) that allows denial of service. Remediation should follow standard vulnerability management procedures. Vendor patch is available.

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.

A low‑privileged local attacker who gains access to the UBR service account (e.g., via SSH) can escalate privileges to obtain full system access. This is due to the service account being permitted to execute certain binaries (e.g., tcpdump and ip) with sudo. [CVSS 7.8 HIGH]

SSRF in Soft Serve Git server versions 0.6.0 to 0.11.3 allows authenticated attackers to make requests to internal services. PoC and patch available.

Outdated MAC algorithms in SSH implementations for Mrs1000 and Lms1000 device firmware enable network-positioned attackers to tamper with session data integrity without user interaction. An attacker with network access can manipulate transmitted SSH traffic due to the use of cryptographically weak message authentication codes. No patch is currently available for affected devices.

Weak CBC cipher suite implementations in SSH services across SSH, LMS1000, and MRS1000 devices enable network-positioned attackers to observe or modify encrypted SSH traffic without authentication. The vulnerability requires user interaction and network access but poses a confidentiality risk to sensitive communications. No patch is currently available.

Gogs is an open source self-hosted Git service. [CVSS 8.8 HIGH]

Weblate versions up to 5.16.0 contains a vulnerability that allows attackers to an argument injection to `ssh-add` (CVSS 6.6).

Hardcoded OS credentials in Glory RBG-100 cash recycler systems using ISPK-08 software component. Physical cash handling equipment ships with known default credentials enabling complete system takeover.

There is a misconfiguration vulnerability inside the Infotainment ECU manufactured by BOSCH. The vulnerability happens during the startup phase of a specific systemd service, and as a result, the following developer features will be activated: the disabled firewall and the launched SSH server. [CVSS 6.8 MEDIUM]

A flaw was found in Dropbear. When running in multi-user mode and authenticating users, the dropbear ssh server does the socket forwardings requested by the remote client as root, only switching to the logged-in user upon spawning a shell or performing some operations like reading the user's files. [CVSS 5.4 MEDIUM]

ZOC Terminal 7.25.5 contains a denial of service vulnerability in the private key file input field that allows attackers to crash the application. [CVSS 7.5 HIGH]

SiYuan knowledge management system prior to 3.5.5 has a path traversal in /api/file/copyFile allowing arbitrary file operations on the server.

The Terraform/OpenTofu Proxmox Provider prior to version 0.93.1 contains a path traversal vulnerability in its SSH sudoer configuration documentation that permits attackers to escape directory restrictions using ../ sequences and modify arbitrary files on the system. Public exploit code exists for this vulnerability, affecting users who implement the documented SSH configuration. The vulnerability has been patched in version 0.93.1 and a fix is available.

OpenClaw AI assistant versions prior to 2026.1.29 contain two command injection vulnerabilities: unescaped user input in SSH project paths allows remote code execution on SSH hosts, and insufficient validation of SSH target parameters enables local command execution through malicious flag injection. An attacker can exploit these flaws to achieve arbitrary code execution either remotely via SSH or locally on the system running OpenClaw.

n8n is an open source workflow automation platform. [CVSS 8.1 HIGH]

Ziroom ZHOME A0101 devices running version 1.0.1.0 use hardcoded default credentials in the Dropbear SSH service, enabling unauthenticated remote attackers to gain unauthorized access with high impact to confidentiality, integrity, and availability. Public exploit code exists for this vulnerability, and the vendor has not provided a patch or response. While exploitation requires specific conditions, security professionals should prioritize assessment and credential rotation for affected systems.

With physical access to the device and enough time an attacker can desolder the flash memory, modify it and then reinstall it because of missing encryption.

with the restriction that the password is only randomized if the configured date versions up to 2022. contains a security vulnerability.

Soft Serve self-hosted Git server versions 0.11.2 and below have a critical authentication bypass that allows unauthenticated access to private repositories.

Operation And Maintenance Security Management System versions up to 3.0.12. is affected by command injection (CVSS 8.8).

Gitlab versions up to 18.6.4 is affected by allocation of resources without limits or throttling (CVSS 5.3).

Hestia Control Panel 1.3.2 contains an arbitrary file write vulnerability that allows authenticated attackers to write files to arbitrary locations using the API index.php endpoint. [CVSS 8.8 HIGH]

SSH service disruption in Cisco IEC6400 Wireless Backhaul Edge Compute Software allows unauthenticated remote attackers to trigger denial of service through connection flooding due to missing rate limiting protections. An attacker can render the SSH service unresponsive by launching a DoS attack against the SSH port, though other device operations remain functional during the attack. No patch is currently available.

MTPutty 1.0.1.21 contains a sensitive information disclosure vulnerability that allows local attackers to view SSH connection passwords through Windows PowerShell process listing. [CVSS 6.2 MEDIUM]

Eclipse Che che-machine-exec exposes an unauthenticated JSON-RPC/WebSocket API on port 3333 that allows remote command execution and secret exfiltration from other users' developer workspace containers.

Stored XSS in Termix File Manager (versions 1.7.0-1.9.0) allows attackers with SSH server access to execute arbitrary JavaScript by uploading malicious SVG files that bypass content sanitization. When a Termix user previews the crafted file, the payload executes within the application context with full access to sensitive operations. Public exploit code exists and no patch is currently available.

KAYSUS KS-WR1200 routers with firmware 107 expose SSH and TELNET services on the LAN interface with hardcoded root credentials (root:12345678). The administrator cannot disable these services or change the hardcoded password. [CVSS 5.4 MEDIUM]

KAYSUS KS-WR3600 routers with firmware 1.0.5.9.1 enable the SSH service enabled by default on the LAN interface. The root account is configured with no password, and administrators cannot disable SSH or enforce authentication via the CLI or web GUI. [CVSS 8.4 HIGH]

SUSE Harvester virtualization environment (1.5.x, 1.6.x) exposes the OS default SSH login password when using the interactive installer. This affects all hosts provisioned through the interactive method, potentially compromising entire virtualization clusters.

When doing SSH-based transfers using either SCP or SFTP, and asked to do public key authentication, curl would wrongly still ask and authenticate using a locally running SSH agent. [CVSS 3.1 LOW]

When doing SSH-based transfers using either SCP or SFTP, and setting the known_hosts file, libcurl could still mistakenly accept connecting to hosts *not present* in the specified file if they were added as recognized in the libssh *global* known_hosts file. [CVSS 5.3 MEDIUM]

FLIR Thermal Camera F/FC/PT/D firmware version 8.0.0.64 contains hard-coded SSH credentials that cannot be changed through normal camera operations. Attackers can leverage these persistent, unmodifiable credentials to gain unauthorized remote access to the thermal camera system. [CVSS 7.5 HIGH]

An unused function in MicroServer can start a reverse SSH connection to a vendor registered domain, without mutual authentication. [CVSS 8.8 HIGH]

Adtec Digital SignEdje Digital Signage Player v2.08.28 contains multiple hardcoded default credentials that allow unauthenticated remote access to web, telnet, and SSH interfaces. [CVSS 7.5 HIGH]

badkeys is a tool and library for checking cryptographic public keys for known vulnerabilities. [CVSS 5.3 MEDIUM]

Coolify through v4.0.0-beta.434 exposes the root user's SSH private key to low-privileged team members. Any user with basic access can extract the key, SSH to the server as root, and fully compromise the Coolify instance and all managed infrastructure. PoC available.

A critical command injection vulnerability exists in the Cybersecurity AI (CAI) framework versions 0.5.9 and below, allowing attackers to execute arbitrary commands through unsanitized SSH parameters (username, host, port) in the run_ssh_command_with_credentials() function accessible to AI agents. The vulnerability has a publicly available proof-of-concept exploit and enables remote code execution with potential for complete system compromise, though real-world exploitation probability remains relatively low at 0.12% EPSS score despite the high CVSS rating of 9.6.

SSH clients receiving SSH_AGENT_SUCCESS when expecting a typed response will panic and cause early termination of the client process. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

CVE-2025-7503 is a security vulnerability (CVSS 10.0). Critical severity with potential for significant impact on affected systems.

Privilege escalation flaw in authd's temporary user record handling during pre-authentication NSS operations that causes first-time SSH login users to be incorrectly assigned root group membership within their session context. This allows authenticated users (PR:L) to gain elevated group privileges over the network (AV:N) with low complexity, affecting system confidentiality (C:H) and integrity (I:L). The vulnerability has a high CVSS score of 8.5, though real-world exploitation requires valid login credentials and depends on authentication infrastructure specifics.

Critical authentication bypass vulnerability in Cisco Integrated Management Controller (IMC) across multiple UCS server platforms that allows authenticated remote attackers to escalate privileges and access internal services with elevated permissions via crafted SSH syntax. The vulnerability affects UCS B-Series, C-Series, S-Series, and X-Series servers, enabling attackers to create administrator accounts and modify system configurations. With a CVSS score of 8.8 and low attack complexity requiring only valid credentials, this vulnerability poses significant risk to data center infrastructure and should be prioritized for patching.

Man-in-the-middle vulnerability in Cisco Nexus Dashboard Fabric Controller (NDFC) caused by insufficient SSH host key validation, allowing unauthenticated remote attackers to impersonate NDFC-managed devices and intercept SSH traffic. This vulnerability affects Cisco NDFC deployments and could lead to credential capture and device impersonation with a CVSS score of 8.7 (High). Without confirmed KEV status or public POC availability noted in standard databases, organizations should prioritize patching based on CVSS severity and the network-accessible nature of the vulnerability (AV:N).

An OpenSSH daemon listens on TCP port 22. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

In Ubuntu, gnome-control-center did not properly reflect SSH remote login status when the system was configured to use systemd socket activation for openssh-server. Rated medium severity (CVSS 4.9), this vulnerability is no authentication required. Public exploit code available.

In sshd in OpenSSH before 10.0, the DisableForwarding directive does not adhere to the documentation stating that it disables X11 and agent forwarding. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity.

Improper input validation in OpenSSH for Windows allows an authorized attacker to elevate privileges locally. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

VyOS 1.3 through 1.5 (fixed in 1.4.2) or any Debian-based system using dropbear in combination with live-build has the same Dropbear private host keys across different installations. Rated critical severity (CVSS 9.0), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Percona PMM Server OVA images ship with default service account credentials that grant SSH access and sudo to root, exposing all monitoring data and managed database credentials. The scope change reflects that compromising the monitoring server gives access to all monitored infrastructure.

A flaw was found in the OpenSSH package. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Epss exploitation probability 42.5% and no vendor patch available.

SSH servers which implement file transfer protocols are vulnerable to a denial of service attack from clients which complete the key exchange slowly, or not at all, causing pending content to be read. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Allocation of Resources Without Limits vulnerability could allow attackers to exhaust system resources through uncontrolled allocation.

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable, no authentication required. Epss exploitation probability 60.0%.

Microsoft OpenSSH for Windows Remote Code Execution Vulnerability. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable.

Microsoft OpenSSH for Windows Remote Code Execution Vulnerability. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable.

Microsoft OpenSSH for Windows Remote Code Execution Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required.

A signal handler in sshd(8) may call a logging function that is not async-signal-safe. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

A race condition vulnerability was discovered in how signals are handled by OpenSSH's server (sshd). Rated high severity (CVSS 7.0), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

OpenSSH 9.5 through 9.7 before 9.8 sometimes allows timing attacks against echo-off password entry (e.g., for su and Sudo) because of an ObscureKeystrokeTiming logic error. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.