RockyLinux 10 : openssh (RLSA-2025:23479)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:23479 advisory. openssh: OpenSSH: Control characters in usernames can lead to code execution via ProxyCommand CVE-2025-61984 openssh: OpenSSH: Null character in ssh://...

openssh security update

An update is available for openssh. This update affects Rocky Linux 10. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list OpenSSH is an SSH protocol implementation supported by a number of Linux,...

openssh security update

An update is available for openssh. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list OpenSSH is an SSH protocol implementation supported by a number of Linux, UNI...

Security Bulletin: IBM i is Affected by Improper Handling of Special Elements and Improper Neutralization of Null Byte Vulnerabilities in OpenSSH [CVE-2025-61984, CVE-2025-61985]

Summary OpenSSH for IBM i is vulnerable to allowing control characters in usernames CVE-2025-61984 and allowing null bytes in the URI CVE-2025-61985 as described in the vulnerability details section. Vulnerability Details CVEID:CVE-2025-61984 DESCRIPTION: ssh in OpenSSH before 10.1 allows control...

CLSA-2026-1777585781 openssh: Fix of CVE-2026-35386

CVE-2026-35386: fix client-side command execution via control characters in usernames by adding iscntrl rejection to validruser...

NewStart CGSL MAIN 7.02 : openssh Multiple Vulnerabilities (NS-SA-2026-0036)

The remote NewStart CGSL host, running version MAIN 7.02, has openssh packages installed that are affected by multiple vulnerabilities: - ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used. CVE-2025-61985 - ssh ...

Mageia: Security Advisory (MGASA-2026-0059)

The remote host is missing an update for the SPDX-FileCopyrightText: 2026 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...

MGASA-2026-0059 Updated openssh packages fix security vulnerabilities

ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used. The untrusted sources are the command line and %-sequence expansion of a configuration file. CVE-2025-61984...

Huawei EulerOS: Security Advisory for openssh (EulerOS-SA-2026-1614)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2026 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...

EulerOS 2.0 SP11 : openssh (EulerOS-SA-2026-1614)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to...

EulerOS 2.0 SP11 : openssh (EulerOS-SA-2026-1586)

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : OpenSSH vulnerabilities (USN-8090-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8090-1 advisory. Jeremy Brown discovered that the OpenSSH GSSAPI Key Exchange incorrectly handled disconnecting clients. In non-default configurations...

USN-8090-2: OpenSSH vulnerabilities

USN-8090-1 fixed vulnerabilities in OpenSSH. This update provides the corresponding updates for Ubuntu 20.04 LTS. Original advisory details: Jeremy Brown discovered that the OpenSSH GSSAPI Key Exchange incorrectly handled disconnecting clients. In non-default configurations where the...

USN-8090-1: OpenSSH vulnerabilities

Jeremy Brown discovered that the OpenSSH GSSAPI Key Exchange incorrectly handled disconnecting clients. In non-default configurations where the GSSAPIKeyExchange setting is enabled, a remote attacker could use this issue to cause OpenSSH to crash, resulting in a denial of service, or possibly...

USN-8090-1 openssh vulnerabilities

Jeremy Brown discovered that the OpenSSH GSSAPI Key Exchange incorrectly handled disconnecting clients. In non-default configurations where the GSSAPIKeyExchange setting is enabled, a remote attacker could use this issue to cause OpenSSH to crash, resulting in a denial of service, or possibly...

Amazon Linux 2023 : openssh, openssh-clients, openssh-keycat (ALAS2023-2026-1441)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1441 advisory. ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources, potentially leading to code execution when a ProxyCommand is used. The...

Moderate: Red Hat Security Advisory: openssh security update

An update for openssh is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

openssh: OpenSSH: Control characters in usernames can lead to code execution via ProxyCommand

A flaw was found in OpenSSH where control characters in usernames were not properly validated when sourced from untrusted inputs like the command line or configuration expansion. If a ProxyCommand is used, these control characters could modify command behavior, potentially leading to code executi...

MiracleLinux 9 : openssh-8.7p1-47.el9_7.ML.1 (AXSA:2025-11563:07)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11563:07 advisory. openssh: OpenSSH: Control characters in usernames can lead to code execution via ProxyCommand CVE-2025-61984 openssh: OpenSSH: Null character in...

CLSA-2026-1767955216 openssh: Fix of 2 CVEs

CVE-2025-61984: fix username handling by rejecting control characters from untrusted sources to prevent ProxyCommand code execution - CVE-2025-61985: disallowed NUL characters in ssh:// URI parsing to prevent ProxyCommand-based code execution...