Detections
Analytics

Echo: tmux: security update to 3.5a-3+e1

low Tenable Self-Hosted Container Security Plugin ID 464579

Description

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

 - A security vulnerability has been detected in tmux up to 3.6a. Affected is the function image_free of the
 file image.c. Such manipulation leads to use after free. Local access is required to approach this attack.
 This attack is characterized by high complexity. The exploitability is told to be difficult. The exploit
 has been disclosed publicly and may be used. Upgrading to version 3.7-rc is able to address this issue.
 The name of the patch is fc6d94a9f8a593bd8b7031650802084385d4ee03. The affected component should be
 upgraded. (CVE-2026-11623)

Solution

Update the tmux library and its related packages to version 3.5a-3+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-11623

Plugin Details

Severity: Low

ID: 464579

Version: Revision 1.2

Type: Local

Published: 10/2/2026

Updated: 10/5/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.8

Percentile: 22.53

CVSS v2

Risk Factor: Low

Base Score: 3.5

Temporal Score: 2.6

Vector: CVSS2#AV:L/AC:H/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2026-11623

CVSS v3

Risk Factor: Medium

Base Score: 4.5

Temporal Score: 3.9

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

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

CVSS v4

Risk Factor: Low

Base Score: 2

Threat Score: 1.1

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/6/2026

Vulnerability Publication Date: 6/9/2026

Reference Information

CVE: CVE-2026-11623