CVE-2026-72530
Last modified
CVE-2026-72530 is a critical-severity vulnerability rated 9/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 0.34% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 |
References
- 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-2026-72530US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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