CVE-2026-72529

CRITICAL 9.8

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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 execute an arbitrary script by calling an undocumented function.

CWE	CWE-306
Vendor	trueconf
Product	trueconf server
Published	Aug 19, 2026
Last Updated	Aug 19, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

TrueConf / TrueConf Server

* < 5.3 5.3 < 5.3.9 5.4 < 5.4.9 5.5 < 5.5.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

ics-cert.kaspersky.com: https://ics-cert.kaspersky.com/advisories/2026/08/11/trueconf-server-missing-authentication-for-critical-function/ securelist.com: https://securelist.com/tr/head-mare-targets-trueconf-server-with-phantomcore/120988/

Credits

Vyacheslav Kopeytsev from Kaspersky ICS CERT