An attacker who gains the ability to execute arbitrary code on a system with TrueConf Server (Linux) versions from 4.7.2 up to, but not including, 5.5.6 installed, running as the user trueconf (by exploiting some other vulnerability), can elevate their privileges to root.

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Fixes

Solution

Update TrueConf Server (Linux) to versions 5.5.6 or newer.


Workaround

Perform a full check with anti-virus software that has up-to-date anti-virus databases and software modules.

History

Fri, 13 Nov 2026 11:45:00 +0000

Type Values Removed Values Added
Title Privilege Escalation via Incorrect Permissions in TrueConf Server Linux

Thu, 12 Nov 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 12 Nov 2026 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Trueconf
Trueconf trueconf Server
Vendors & Products Trueconf
Trueconf trueconf Server

Thu, 12 Nov 2026 14:00:00 +0000

Type Values Removed Values Added
Title Privilege Escalation via Incorrect File Permissions in TrueConf Server (Linux)

Wed, 11 Nov 2026 22:45:00 +0000

Type Values Removed Values Added
Title Privilege Escalation via Incorrect File Permissions in TrueConf Server (Linux)

Wed, 11 Nov 2026 14:15:00 +0000

Type Values Removed Values Added
Description An attacker who gains the ability to execute arbitrary code on a system with TrueConf Server (Linux) versions from 4.7.2 up to, but not including, 5.5.6 installed, running as the user trueconf (by exploiting some other vulnerability), can elevate their privileges to root.
Weaknesses CWE-276
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Kaspersky

Published:

Updated: 2026-11-12T04:56:21.339Z

Reserved: 2026-11-05T07:33:05.167Z

Link: CVE-2026-123040

cve-icon Vulnrichment

Updated: 2026-11-11T14:15:31.809Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-11T14:17:32.280

Modified: 2026-11-12T19:09:06.967

Link: CVE-2026-123040

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-13T11:30:08Z

Weaknesses