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.
9.5
1.8%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- High
- Attack requirements
- Present
- Privileges required
- None
- User interaction
- None
- Confidentiality (Vulnerable System)
- High
- Integrity (Vulnerable System)
- High
- Availability (Vulnerable System)
- High
- Confidentiality (Subsequent System)
- High
- Integrity (Subsequent System)
- High
- Availability (Subsequent System)
- High
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
- 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
Weaponization
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.
No public GitHub repositories referencing CVE-2026-72530 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
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 9.5 out of 10 (CVSS 4.0).
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).
What type of vulnerability is CVE-2026-72530?
CVE-2026-72530 is classified under CWE-94 (CWE-94: Code Injection).
Cross-checked against
Impactr finds and proves whether CVE-2026-72530 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.