Auth bypass in Trueconf Server

CVE-2026-72529

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.

Vulnerability class: Broken Authentication

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-72529?
CVE-2026-72529 is a critical-severity vulnerability in Trueconf Server, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-08-19.
How severe is CVE-2026-72529?
Critical severity. CVSS v3 base score is 9.8 out of 10.