OpenSSH < 9.9p2 MitM

The version of OpenSSH installed on the remote host is prior to 9.9p2. It is, therefore, affected by a man in the middle MITM vulnerability. ssh1 in OpenSSH versions 6.8p1 to 9.9p1 inclusive contained a logic error that allowed an on-path attacker a.k.a MITM to impersonate any server when the...

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...

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

The CVE-2025-26465 issue affects OpenSSH when VerifyHostKeyDNS is enabled. A remote attacker could perform a MITM impersonation by abusing error-code handling during host-key verification, with success contingent on exhausting the client’s memory resources. Affected context is OpenSSH implementat...

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...

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...

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...

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...

Cloud Software Group Security Advisory for CVE-2024-6387

Advisory for 3rd party CVE-2024-6387 Cloud Software Group is aware of the vulnerability CVE-2024-6387 impacting OpenSSH. Qualys has discovered a remote unauthenticated code execution vulnerability in OpenSSH’s server sshd in glibc-based Linux systems. Because this vulnerability is a regression of...

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...