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CRITICAL CISA KEV

CVE-2026-72530

CVSS v3

9

CRITICAL

EPSS Score

1.0 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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.

CISA Known Exploited Vulnerability

Date Added
2026-08-20
Patch Due Date
2026-09-03
Ransomware Use
Unknown

Technical details

CVSS v3 Vector
3.1
Published
2026-08-19
Last Modified
2026-08-21

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.

Is CVE-2026-72530 actively exploited?

Yes. CVE-2026-72530 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-09-03.

What is the CVSS score for CVE-2026-72530?

CVE-2026-72530 has a CVSS v3 base score of 9 (CRITICAL severity), with vector string 3.1.

Is CVE-2026-72530 affecting your environment?

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