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critical9.0Known exploited

CVE-2026-72530

TrueConf Server Code Injection Vulnerability

Exploited in the wild

This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-08-20. Federal due date: 2026-09-03.

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.

Impact

TrueConf Server contains a code injection vulnerability that could allow an unauthorized remote attacker with network access via port 4307/TCP to use a specially crafted script to break out of the isolated environment and execute arbitrary code on the host system.

Affected products

VendorProductAffected versions
TrueConfTrueConf Server
from 5.3 before 5.3.9
from * before 5.3
from 5.5 before 5.5.5
from 5.4 before 5.4.9
TrueconfTrueconf Server
before 5.3.9.10013
before 5.3.9.10015
from 5.4.0.12689 before 5.4.9.10072
from 5.4.0.12700 before 5.4.9.10019
from 5.5.0.13826 before 5.5.5.10010
from 5.5.0.13828 before 5.5.5.10009

Weakness classification

CWE-94

References