TrueConf Server Code Injection Vulnerability
TrueConf — TrueConf Server
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.
9.0
1.8%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- Published
- Aug 19, 2026
- Modified
- Aug 21, 2026
- Added to KEV
- Aug 20, 2026
- Federal patch due
- Sep 3, 2026
CISA required action
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.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
1 foundWeaponization
Public repositories whose name or description references CVE-2026-72530, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
References
How this class of flaw gets exploited
Frequently asked questions
What is 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.
How severe is CVE-2026-72530?
CVE-2026-72530 has a CVSS base score of 9.0 out of 10 (CVSS 3.1).
Is CVE-2026-72530 actively exploited in the wild?
Yes. CVE-2026-72530 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Aug 20, 2026, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2026-72530?
1.8% - meaning FIRST.org's EPSS model estimates a 1.8% probability this vulnerability will be exploited in the wild within 30 days (77% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2026-72530?
We found 1 public GitHub repository referencing CVE-2026-72530, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
What type of vulnerability is CVE-2026-72530?
CVE-2026-72530 is classified under CWE-94 (CWE-94: Code Injection).
Cross-checked against
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