CVE-2026-72529

nvd.nist.gov • August 21, 2026

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.

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

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Critical Vulnerabilities in TrueConf Server Exploited via TCP Port 4307 Two critical vulnerabilities, CVE-2026-72530 and CVE-2026-72529, have been identified in TrueConf server versions 5.3.X to 5.5.5, allowing remote unauthorized attackers to exploit the server via TCP port 4307. CVE-2026-72530 enables attackers to execute arbitrary code by breaking out of an isolated environment, while CVE-2026-72529 allows script execution through an undocumented function. Both vulnerabilities were published on 2026-08-19 and added to the CISA Known Exploited Vulnerabilities catalog on 2026-08-20 due to active exploitation. Organizations using affected TrueConf server versions are at significant risk and are advised to review CISA's guidance for mitigation. Immediate action is recommended to secure systems against these vulnerabilities. 73

Extracted Entities

CVE-2026-72529

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Extracted Entities

Attack Types (1)

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CVEs (1)

MITRE ATT&CK (1)