CVE-2025-47203

CVE-2025-47203 affects the Dropbear SSH package’s dbclient before version 2025.88. The vulnerability arises because a shell is used when processing the hostname argument, allowing an attacker to craft an untrusted hostname that can trigger command execution. Impact is described as arbitrary comma...

PT-2025-20286

Name of the Vulnerable Software and Affected Versions: Dropbear SSH versions prior to 2025.88 Description: The issue allows command injection via an untrusted hostname argument, because a shell is used. This occurs when the dbclient in Dropbear SSH is used with an untrusted hostname...

Do Not Configure the Encryption Algorithm Overwriting Policy for the SSH Service

The configuration files of the SSH encryption algorithms are /etc/ssh/sshdconfig and /etc/sysconfig/sshd. When the SSH service is running, you can edit the /etc/sysconfig/sshd file to overwrite the encryption algorithm policy. If the encryption algorithm overwriting policy is configured, users ar...

CVE-2025-47203

dbclient in Dropbear SSH before 2025.88 allows command injection via an untrusted hostname argument, because a shell is used...

Configure Proper SSH Key Exchange Algorithms

Key exchange is a process in which two parties exchange keys to allow the use of an encryption algorithm. A secure key exchange algorithm enables them to securely exchange keys, thereby using encryption algorithms to encrypt messages to be sent and decrypt received messages. Set the SSH key...

Do Not Preset authorized_keys for the SSH Service

authorizedkeys specifies the public key of the remote host. You can store the public key in the $HOME/.ssh/authorizedkeys file in the home directory for public key authentication. Then you can directly log in to the system. If authorizedkeys is preset in the system and public and private key...

Bind Network Interfaces to the Correct Zones

Different filtering policies can be configured for different firewall zones. If the server network is complex and has multiple interfaces that provide different service functions, it is recommended that interfaces be configured in different zones and different firewall policies be configured. For...

Disable PermitUserEnvironment

PermitUserEnvironment allows users to set SSH environment variables, which may be exploited by attackers to launch attacks. If PermitUserEnvironment is set to yes, attackers can modify SSH environment variables to evade the security mechanism or execute attack code. This configuration must be...

CVE-2025-4041

In Optigo Networks ONS NC600 versions 4.2.1-084 through 4.7.2-330, an attacker could connect with the device's ssh server and utilize the system's components to perform OS command executions...

CVE-2025-4041 Use of Hard-coded Credentials Optigo Networks ONS NC600

In Optigo Networks ONS NC600 versions 4.2.1-084 through 4.7.2-330, an attacker could connect with the device's ssh server and utilize the system's components to perform OS command executions...

CVE-2025-4041

Optigo Networks ONS NC600, versions 4.2.1-084 through 4.7.2-330, are affected by CVE-2025-4041. An attacker who can access the device’s SSH service could leverage system components to execute OS commands on the device. The impact is consistent with a remote command execution risk affecting availa...

CVE-2025-4041 Use of Hard-coded Credentials Optigo Networks ONS NC600

In Optigo Networks ONS NC600 versions 4.2.1-084 through 4.7.2-330, an attacker could connect with the device's ssh server and utilize the system's components to perform OS command executions...

ROS-20250505-01

The vulnerability in the Golang programming language SSH server is related to the fact that the application does not control internal resources consumption in the ssh packet when working with clients that are slow or do not perform key exchange at all. or do not perform key exchange at all...

PT-2025-19913 · Optigo Networks · Optigo Networks Ons Nc600

Name of the Vulnerable Software and Affected Versions: Optigo Networks ONS NC600 versions 4.2.1-084 through 4.7.2-330 Description: An issue exists where an attacker could connect to the device's ssh server and utilize the system's components to perform OS command executions. Recommendations: For...

GO-2025-3649 Fleet doesn’t validate a server’s certificate when connecting through SSH in github.com/rancher/fleet

Fleet doesn’t validate a server’s certificate when connecting through SSH in github.com/rancher/fleet...

golang.org/x/crypto/ssh: Misuse of ServerConfig.PublicKeyCallback may cause authorization bypass in golang.org/x/crypto

A flaw was found in the x/crypto/ssh go library. Applications and libraries that misuse the ServerConfig.PublicKeyCallback callback may be susceptible to an authorization bypass. For example, an attacker may send public keys A and B and authenticate with A. PublicKeyCallback would be called only...

Exploit for Missing Authentication for Critical Function in Erlang Erlang\/Otp

✅ Result The server responded to an SSH message ID 80 0x5...

📄 Erlang-Based SSH OTP Pre-Authentication Remote Code Execution

This Metasploit module detect and exploits CVE-2025-32433, a pre-authentication vulnerability in Erlang-based SSH servers that allows remote command execution. By sending crafted SSH packets, it executes a payload to establish a reverse shell on the target system. The exploit leverages a flaw in...

Man-In-The-Middle (MITM)

github.com/rancher/flee is vulnerable to Man-in-the-Middle MitM attack. The vulnerability is due to improper certificate validation and Fleet automatically trusting remote server SSH certificates if not listed in the knownhosts file, allowing potential spoofing by an attacker...

ROS-20250430-05

Vulnerability of Erlang programming language OTP library set is related to improper packet handling SFTP. Exploitation of the vulnerability could allow an attacker acting remotely to cause a denial of service. denial of service Vulnerability of SSH protocol implementation from Erlang/OTP library...