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.
Published: 2026-11-11
Score: 8.5 High
EPSS: < 1% Very Low
KEV: No
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Solution

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


Vendor Workaround

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

Tracking

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Advisories

No advisories yet.

History

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'}


Subscriptions

Trueconf Trueconf Server
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: 2026-11-12T17:45:06Z

Weaknesses
  • CWE-276

    Incorrect Default Permissions