CVE-2026-72530

Remote Code Execution via Script Upload in TrueConf Server

Published Aug 19, 2026 CVSS 4.0 · 9.5 Critical EPSS 1.7% KEV · Listed
Description
A remote unauthorized attacker with network access via port 4307/TCP to the TrueConf server versions 5.3.X to 5.3.9, 5.4.X to 5.4.9, 5.5.X to 5.5.5, and earlier could use a specially crafted script to break out of the isolated environment and execute arbitrary code on the host system.

Remediation

Vendor Solution

Update TrueConf server to versions 5.3.9, 5.4.9 or 5.5.5.


Vendor Workaround

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

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Title Remote Code Execution via Script Upload in TrueConf Server
Type Values Removed Values Added
First Time appeared Trueconf trueconf Server
CPEs cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:linux_kernel:*:*
cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:windows:*:*
Vendors & Products Trueconf trueconf Server
Type Values Removed Values Added
References
Metrics ssvc

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

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2026-08-20T00:00:00+00:00', 'dueDate': '2026-09-03T00:00:00+00:00'}

Type Values Removed Values Added
Title Remote Code Execution via Script on TrueConf Server
Type Values Removed Values Added
Title Remote Code Execution via Script on TrueConf Server
Type Values Removed Values Added
First Time appeared Trueconf
Trueconf server
Vendors & Products Trueconf
Trueconf server
Type Values Removed Values Added
References
Metrics ssvc

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

Type Values Removed Values Added
Description A remote unauthorized attacker with network access via port 4307/TCP to the TrueConf server versions 5.3.X to 5.3.9, 5.4.X to 5.4.9, 5.5.X to 5.5.5, and earlier could use a specially crafted script to break out of the isolated environment and execute arbitrary code on the host system.
Weaknesses CWE-94
References
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.5, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Kaspersky
Published
Updated
Aug 21, 2026, 3:55 AM
Reserved
Aug 10, 2026, 9:55 AM
Status
Analyzed
Published
Aug 19, 2026, 5:21 PM
Modified
Aug 21, 2026, 4:18 AM