CVE-2026-72530
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.
CVSS Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected Products (6)
| Vendor | Product | Version |
|---|---|---|
| trueconf | trueconf_server | * < 5.3.9.10013 |
| trueconf | trueconf_server | * < 5.3.9.10015 |
| trueconf | trueconf_server | * ≥ 5.4.0.12689 < 5.4.9.10072 |
| trueconf | trueconf_server | * ≥ 5.4.0.12700 < 5.4.9.10019 |
| trueconf | trueconf_server | * ≥ 5.5.0.13826 < 5.5.5.10010 |
| trueconf | trueconf_server | * ≥ 5.5.0.13828 < 5.5.5.10009 |
GitHub Security Advisory GHSA-f8q9-f337-2p3r
A remote unauthorized attacker with network access via port 4307/TCP to the TrueConf server...
References (3)
- https://ics-cert.kaspersky.com/advisories/2026/08/11/trueconf-server-breakout-from-isolated-environment/ Third Party Advisory
- https://securelist.com/tr/head-mare-targets-trueconf-server-with-phantomcore/120988/ Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-72530 US Government Resource
Risk Scores
Top 41% most likely to be exploited
CISA Known Exploited
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.