Detections
Analytics

Google: net-misc/openssh: security update to 17800.436.60

medium Tenable Cloud Security Plugin ID 454891

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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 an uncontrolled
 increase in memory consumption on the server side. Consequently, the server may become unavailable,
 resulting in a denial of service attack. (CVE-2025-26466)

Solution

Update the net-misc/openssh library and its related packages to version 17800.436.60 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-109.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 454891

Version: Revision 1.1

Type: Local

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 96.22

Vendor

Vendor Severity: MEDIUM

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.2

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2025-26466

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 12/12/2023

Reference Information

CVE: CVE-2025-26466