Fortinet FortiWeb Pre-authentication DoS attack in OpenSSH - CVE-2025-26466 (FG-IR-25-122)

The version of FortiWeb installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-25-122 advisory. - A flaw was found in the OpenSSH package. For each ping packet the SSH server receives, a pong packet is allocated in a memor...

Exploit for Allocation of Resources Without Limits or Throttling in Openbsd Openssh

CVE-2025-26466 Metasploit module OpenSSH versions 9.5p1 to...

QNAP QuTS hero Multiple OpenSSH Vulnerabilities (QSA-25-14)

QNAP QuTS hero is prone to multiple vulnerabilities in OpenSSH. 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 = "cpe:/o:qnap:qutshero";...

SUSE: Security Advisory (SUSE-SU-2025:0585-1)

The remote host is missing an update for the 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...

Security update for openssh

This update for openssh fixes the following issues: CVE-2025-26465: Fixed MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client bsc1237040. CVE-2025-26466: Fixed DoS attack against OpenSSH's client and server bsc1237041. Other bugfixes: Fix ssh client segfault with GSSAPIKeyExchange=yes i...

Security Bulletin: AIX is vulnerable to a denial of service (CVE-2025-26466) and a machine-in-the-middle attack (CVE-2025-26465) due to OpenSSH

Summary Vulnerabilities in AIX's OpenSSH could allow a remote attacker to cause a denial of service CVE-2025-26466 or a machine-in-the-middle attack CVE-2025-26465. OpenSSH is used by AIX for remote login. Vulnerability Details CVEID:CVE-2025-26466 DESCRIPTION: A flaw was found in the OpenSSH...

AIX is vulnerable to a denial of service (CVE-2025-26466) and a machine-in-the-middle attack (CVE-2025-26465) due to OpenSSH

IBM SECURITY ADVISORY First Issued: Mon Mar 17 15:30:45 CDT 2025 The most recent version of this document is available here: https://aix.software.ibm.com/aix/efixes/security/opensshadvisory18.asc Security Bulletin: AIX is vulnerable to a denial of service CVE-2025-26466 and a machine-in-the-middl...

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-2025-26466 Openssh: denial-of-service in openssh

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-2025-26466

CVE-2025-26466 describes a DoS in OpenSSH where a malicious client floods ping/pong packets, causing unbounded memory growth on the server. Connected IBM AIX advisory notes affected OpenSSH filesets and provides concrete fixes: openssh.base.client/server at OpenSSH versions 9.7.3013.1000 (and 9.9...

Fedora: Security Advisory (FEDORA-2025-62f6cb2785)

The remote host is missing an update for the 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...

Fedora 40 : openssh (2025-62f6cb2785)

The remote Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-62f6cb2785 advisory. Fix missing error codes set and invalid error code checks in OpenSSH. It prevents memory exhaustion attack and a MITM attack when VerifyHostKeyDNS i...

openssh-9.9p2-1.1 on GA media (moderate)

openssh-9.9p2-1.1 on GA media Announcement ID: openSUSE-SU-2025:14820-1 Rating: moderate Cross-References: CVE-2025-26465 CVE-2025-26466 CVSS scores: CVE-2025-26465 SUSE : 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N CVE-2025-26466 SUSE : 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : openssh (SUSE-SU-2025:0585-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:0585-1 advisory. - CVE-2025-26465: Fixed MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client bsc1237040...

Slackware: Security Advisory (SSA:2025-049-01)

The remote host is missing an update for the 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...

Critical OpenSSH Vulnerabilities Expose Users to MITM and DoS Attacks

Two critical OpenSSH vulnerabilities discovered! Qualys TRU finds client and server flaws CVE-2025-26465 & CVE-2025-26466 enabling MITM and…...

Security update for openssh

This update for openssh fixes the following issues: CVE-2025-26465: Fixed MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client bsc1237040. CVE-2025-26466: Fixed DoS attack against OpenSSH's client and server bsc1237041. Patch Instructions: To install this SUSE update use the SUSE...

SUSE-SU-2025:0585-1 Security update for openssh

This update for openssh fixes the following issues: - CVE-2025-26465: Fixed MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client bsc1237040. - CVE-2025-26466: Fixed DoS attack against OpenSSH's client and server bsc1237041...

New OpenSSH Flaws Enable Man-in-the-Middle and DoS Attacks — Patch Now

Two security vulnerabilities have been discovered in the OpenSSH secure networking utility suite that, if successfully exploited, could result in an active machine-in-the-middle MitM and a denial-of-service DoS attack, respectively, under certain conditions. The vulnerabilities, detailed by the...

CVE-2025-26466

creationtimestamp| type| source ---|---|--- 2025-02-18 09:22:25+00:00| seen| https://bsky.app/profile/buherator.bsky.social/post/3ligwqw2rjw26 2025-02-18 10:09:11+00:00| seen| https://t.me/ctinow/231009 2025-02-18 11:29:07+00:00| seen| https://bsky.app/profile/omo.bsky.social/post/3lih5tgnx5k2k...