Qualys TRU Discovers Two Vulnerabilities in OpenSSH: CVE-2025-26465 & CVE-2025-26466

The Qualys Threat Research Unit TRU has identified two vulnerabilities in OpenSSH. The first, tracked as CVE-2025-26465, allows an active machine-in-the-middle attack on the OpenSSH client when the VerifyHostKeyDNS option is enabled. The second, CVE-2025-26466, affects both the OpenSSH client and...

DLA-4057-1 openssh - security update

Bulletin has no description...

OpenSSH 9.9p1 Denial of Service / Man-In-The-Middle

OpenSSH versions 6.8p1 to 9.9p1 contain a logic error that allow an on-path attacker a.k.a man-in-the-middle to impersonate any server when the VerifyHostKeyDNS option is enabled. This option is off by default. OpenSSH versions 9.5p1 to 9.9p1 are vulnerable to a memory/CPU denial of service relat...

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...

Debian dla-4057 : openssh-client - security update

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4057 advisory. ------------------------------------------------------------------------- Debian LTS Advisory DLA-4057-1 [email protected] https://www.debian.org/lts/security/...

Debian: Security Advisory (DSA-5868-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Moderate Photon OS Security Update - PHSA-2025-5.0-0475

Updates of 'openssh' packages of Photon OS have been released...

OpenSSH 安全漏洞

OpenSSH OpenBSD Secure Shell is a set of connection tools for secure access to remote computers from the Canadian OpenBSD Project Group. The tool is an open source implementation of the SSH protocol that supports encryption of all transmissions, effectively blocking eavesdropping, connection...

OpenSSH: Multiple Vulnerabilities

Background OpenSSH is a free application suite consisting of server and clients that replace tools like telnet, rlogin, rcp and ftp with more secure versions offering additional functionality. Description Multiple vulnerabilities have been discovered in OpenSSH. Please review the CVE identifiers...

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 ...

OpenBSD OpenSSH 6.8p1 - 9.9p1 MitM Vulnerability

OpenBSD OpenSSH is prone to a man-in-the-middle MitM vulnerability. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

DSA-5868-1 openssh - security update

Bulletin has no description...

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...

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...

GLSA-202502-01 : OpenSSH: Multiple Vulnerabilities

The remote host is affected by the vulnerability described in GLSA-202502-01 OpenSSH: Multiple Vulnerabilities Multiple vulnerabilities have been discovered in OpenSSH. Please review the CVE identifiers referenced below for details. Tenable has extracted the preceding description block directly...

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...

Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : OpenSSH vulnerabilities (USN-7270-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7270-1 advisory. It was discovered that the OpenSSH client incorrectly handled the non-default VerifyHostKeyDNS option. If that option wer...

Moderate Photon OS Security Update - PHSA-2025-3.0-0817

Updates of 'openssh' packages of Photon OS have been released...

OpenSSH 9.9p1 Denial of Service / Man-In-The-Middle Vulnerability

OpenSSH versions 6.8p1 to 9.9p1 contain a logic error that allow an on-path attacker a.k.a man-in-the-middle to impersonate any server when the VerifyHostKeyDNS option is enabled. This option is off by default. OpenSSH versions 9.5p1 to 9.9p1 are vulnerable to a memory/CPU denial of service relat...

Debian: Security Advisory (DLA-4057-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...