CVE-2026-72529

State: Published
Severity: 9.3 Critical
Published: Aug 19, 2026
Updated: Aug 21, 2026
Reserved: Aug 10, 2026

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 execute an arbitrary script by calling an undocumented function.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	Kaspersky
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Kaspersky

Weaknesses

CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
TrueConf ServerTrueConf	before 5.3Affected 5.3 to before 5.3.9Affected 5.4 to before 5.4.9Affected 5.5 to before 5.5.5Affected

References

KLCERT-26-057: TrueConf Server. Missing Authentication for Critical Functionthird-party-advisory
https://securelist.com/tr/head-mare-targets-trueconf-server-with-phantomcore/120988/related
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-72529government-resource

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