Detections
Analytics
OpenSSH < 10.5 Multiple Vulnerabilities
medium Nessus Plugin ID 335161
Synopsis
The SSH server running on the remote host is affected by multiple vulnerabilities.Description
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 are concurrent. (CVE-2026-73282)
- In ssh-agent in OpenSSH before 10.5, some operations can occur remotely but were intended to occur only locally, including operations that add tokens or use keys. This is caused by misinteraction between agent locking and the [email protected] extension. (CVE-2026-73281)
- In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not. (CVE-2026-73283)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Upgrade to OpenSSH version 10.5 or later.See Also
Plugin Details
Severity: Medium
ID: 335161
File Name: openssh_10_5.nasl
Version: 1.1
Type: Remote
Family: Misc.
Published: 8/13/2026
Updated: 8/13/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 2.1
Percentile: 7.91
CVSS v2
Risk Factor: Medium
Base Score: 4
Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:N
CVSS Score Source: CVE-2026-73282
CVSS v3
Risk Factor: Medium
Base Score: 4.8
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Vulnerability Information
CPE: cpe:/a:openbsd:openssh
Required KB Items: installed_sw/OpenSSH
Patch Publication Date: 8/11/2026
Vulnerability Publication Date: 8/11/2026