CVE-2026-72530
Prioritize patching. It under exploitation confirmed by CISA.
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
A vulnerability in TrueConf server allows remote attackers to execute arbitrary code on the affected system by sending a specially crafted script through port 4307/TCP, breaking out of the security sandbox that normally restricts what code can do.
CWE-94 (Code Injection) vulnerability affecting TrueConf versions 5.3.0-5.3.9, 5.4.0-5.4.9, 5.5.0-5.5.5 and earlier. An unauthenticated attacker with network access to port 4307/TCP can exploit improper input validation to inject and execute arbitrary code outside the intended isolated environment, achieving remote code execution on the host system.