CVE-2026-123040

HIGH 7.8

CVSS Score

7.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-276
Vendor	trueconf
Product	trueconf server
Published	Nov 11, 2026
Last Updated	Nov 12, 2026

Stay Ahead of the Next One

Get instant alerts for trueconf trueconf server

Be the first to know when new high vulnerabilities affecting trueconf trueconf server are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

TrueConf / TrueConf Server

4.7.2 < 5.5.6

References

NVD ↗ CVE.org ↗ EPSS Data ↗

ics-cert.kaspersky.com: https://ics-cert.kaspersky.com/advisories/2026/11/10/trueconf-server-linux-incorrect-default-permissions/

Credits

Vyacheslav Kopeytsev from Kaspersky ICS CERT Grigory Sablin from Kaspersky GERT