CVE-2025-26465 Openssh: machine-in-the-middle attack if verifyhostkeydns is enabled

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. Fo...

CVE-2025-26465 Openssh: machine-in-the-middle attack if verifyhostkeydns is enabled

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. Fo...

CVE-2025-26465

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. Fo...

USN-7270-2: OpenSSH vulnerability

USN-7270-1 fixed a vulnerability in OpenSSH. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Original advisory details: It was discovered that the OpenSSH client incorrectly handled the non-default VerifyHostKeyDNS option. If that option were enabled, an...

CVE-2025-26466

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 ...

CVE-2025-26465

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. Fo...

PT-2025-7169

Name of the Vulnerable Software and Affected Versions OpenSSH versions 9.5p1 through 9.9p1 Description The issue is related to an uncontrolled consumption of resources in OpenSSH, which can be exploited by a remote attacker to cause a denial of service. This can be achieved through memory...

Ubuntu 16.04 LTS / 18.04 LTS : OpenSSH vulnerability (USN-7270-2)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-7270-2 advisory. USN-7270-1 fixed a vulnerability in OpenSSH. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Tenable has...

CVE-2025-26465 affecting package openssh for versions less than 9.8p1-3

CVE-2025-26465 affecting package openssh for versions less than 9.8p1-3. A patched version of the package is available...

CVE-2025-26466 affecting package openssh for versions less than 9.8p1-3

CVE-2025-26466 affecting package openssh for versions less than 9.8p1-3. A patched version of the package is available...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the sshpacketreadpollseqnr function in packet.c. Ping packets SSH2MSGPING received without authentication buffer but neither send nor free PONG responses, which can consume unlimit...

PT-2025-7168

Name of the Vulnerable Software and Affected Versions OpenSSH versions 6.8p1 through 9.9p1 Description A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled, allowing a machine-in-the-middle attack to be performed by a malicious machine impersonating a legitimate server...

Astra Linux – Vulnerability in OpenSSH

A vulnerability was discovered in OpenSSH when the VerifyHostKeyDNS option is enabled. A man-in-the-middle attack can be carried out by a malicious machine pretending to be a legitimate server. This issue arises due to the way OpenSSH handles error codes under certain conditions during the...

Security Bulletin: Vulnerability in OpenSSH affects watsonx.data

Summary The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks . This could affect watsonx.data. Vulnerability Details CVEID:CVE-2023-48795 DESCRIPTION: The SSH transport protocol with certain...

Security Bulletin: IBM Db2 Big SQL on Cloud Pak for Data is vulnerable to OpenSSH vulnerability CVE-2024-6387

Summary IBM Db2 Big SQL on Cloud Pak for Data embeds a variant of the IBM Db2 database server that runs in MPP mode. For MPP functionality such as scale-out, internally the server uses the secure shell SSH protocol for inter-pod communication. SSH protocol is not exposed to external users or...

Exploit for Double Free in Openbsd Openssh

OpenSSH Vulnerability Testing Tool for CVE-2023-25136 This re...

Advisory ROSA-SA-2025-2551

Software: openssh 7.4p1 OS: rosa-server79 packageevrstring: openssh-7.4p1-23.0.6.res7 CVE-ID: CVE-2018-20685 BDU-ID: 2019-00773 CVE-Crit: MEDIUM CVE-DESC.: A vulnerability in the OpenSSH cryptographic security tool is caused by errors in the validation of the scp.c directory name in the scp clien...

Exploit for Race Condition in Openbsd Openssh

Summary This is essentially a statistical vulnerability: a la...

Security Bulletin: Vulnerability in openssh (CVE-2020-15778) affects Power HMC.

Summary The openssh library is used by Power Hardware Management Console HMC. HMC has addressed the applicable CVE. Vulnerability Details CVEID:CVE-2020-15778 DESCRIPTION: OpenSSH could allow a remote attacker to execute arbitrary commands on the system, caused by improper input validation in the...

OS command injection vulnerability in OpenSSH (CVE-2023-51385)

In ssh in OpenSSH before 9.6, OS command injection might occur if a user name or host name has shell metacharacters, and this name is referenced by an expansion token in certain situations. For example, an untrusted Git repository can have a submodule with shell metacharacters in a user name or...