CVE-2026-72530: trueconf trueconf_server

CVSS 9.5 (critical) · listed as exploited by CISA since 2026-08-20 · published 2026-08-19

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.

Affected products (NVD): trueconf trueconf_server

Fixed in (NVD): 5.3.9.10013, 5.3.9.10015, 5.4.9.10072, 5.4.9.10019, 5.5.5.10010, 5.5.5.10009

Weakness: CWE-94

Source: NVD CVE-2026-72530

References

• https://ics-cert.kaspersky.com/advisories/2026/08/11/trueconf-server-breakout-from-isolated-environment/
• https://securelist.com/tr/head-mare-targets-trueconf-server-with-phantomcore/120988/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-72530

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