Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS / Pro Realtime 22.04 LTS / Pro Realtime 24.04 LTS : OpenSSH vulnerabilities (USN-8721-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS / Pro Realtime 22.04 LTS / Pro Realtime 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8721-1 advisory. It was discovered that OpenSSH's ssh-agent incorrectly handled interactions...

CVE-2026-73283

A flaw was found in OpenSSH's sshd component. The restrict keyword, designed to limit tunnel forwarding within the authorizedkeys file, was not correctly enforced for tunnel forwarding. This issue could allow a local attacker to bypass intended security restrictions, potentially leading to...

SUSE CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

JLSEC-2026-1329 In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be...

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

OESA-2026-3350 openssh security update

An open source implementation of SSH protocol version 2 Security Fixes: sftp in OpenSSH before 10.4 does not properly constrain the location of downloaded files when "sftp server:/path ." is used with an attacker-controlled server.CVE-2026-59995 scp in OpenSSH before 10.4 may place a file in the...

OpenSSH < 10.5 Multiple Vulnerabilities

The version of OpenSSH installed on the remote host is prior to 10.5. It is, therefore, affected by multiple vulnerabilities as referenced in the release-10.5 advisory. - In ssh in OpenSSH before 10.5, a use-after-free for realloc data can occur if a certain pair of remote-forwarding operations a...

Linux Distros Unpatched Vulnerability : CVE-2026-73283

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not. CVE-2026-73283 Note that...

DEBIAN-CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

AZL-95532 CVE-2026-73283 affecting package openssh 9.8p1-9

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

UBUNTU-CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

EUVD-2026-56892

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

CVE-2026-73283

In OpenSSH sshd, prior to version 10.5, the restrict keyword in authorized_keys was not correctly limited to tunnel forwarding as intended. This CVE (CVE-2026-73283) affects the ability of the restrict option to apply to tunnel forwarding, potentially expanding the execution context for restricte...

CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

CVE-2026-73283

In sshd in OpenSSH before 10.5, the restrict keyword in authorizedkeys was supposed to be applicable to tunnel forwarding but was not...

PT-2026-70885

Name of the Vulnerable Software and Affected Versions OpenSSH versions prior to 10.5 Description In sshd, the restrict keyword used in the authorized keys file failed to properly apply to tunnel forwarding, allowing it to persist even when restrictions were intended. Recommendations Update to...