Vulnerability intelligence

CVE-2026-72530

TrueConf Server Code Injection Vulnerability

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 Score

9.5

Critical

EPSS — Exploit Probability

1.7%

Riskier than 76% of all CVEs · checked 2026-10-05

Exploitation

Confirmed in the wild

KEV since 2026-08-20

Remediation

unknown

Federal deadline 2026-09-03

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. Deadline for federal agencies: 2026-09-03.

NVD entry PoC / advisory CISA KEV

6 articles across 5 outlets · first covered Aug 20, 2026 · latest Aug 21, 2026

Associated threat actors

Head Mare

Coverage timeline

CISA adds TrueConf Server CVEs to KEV, urges urgent patching
securityaffairs.com · Aug 21, 2026
CISA Urges Immediate Patching of Exploited TrueConf Vulnerabilities
www.securityweek.com · Aug 21, 2026
TrueConf Server bugs exposed as Android 17 tightens memory
securityonline.info · Aug 21, 2026
CISA KEV Lists CVE-2026-72530 TrueConf Server Code Injection Flaw
www.cisa.gov · Aug 21, 2026
TrueConf Server bugs CVE-2026-72529/72530 let hackers run code
securityonline.info · Aug 20, 2026
CISA Adds CVE-2026-72530 to Known Exploited Vulnerabilities Catalogue
cisa.gov · Aug 20, 2026

Related CVEs — TrueConf

CVE-2026-72529KEV CVE-2026-49261 CVE-2026-48165 CVE-2026-48163 CVE-2026-3502KEV