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CVE-2026-72530

9, critical Known exploited

TrueConf Server Code Injection Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
9, critical critical CVSS v3.1
EPSS, next 30 days
2% higher than 76.6% of scored CVEs
Exploitation
Confirmed in the wild
Published
19 Aug 2026a month ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 20 Aug 2026. US federal agencies had to remediate by 3 Sept 2026, a deadline that has passed.

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.

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.

Details

Vendor
TrueConf
Product
TrueConf Server
Weakness
CWE-94 (opens in a new tab)
Status
Analyzed
Updated
21 Aug 2026
Assigner
vulnerability@kaspersky.com

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References 3

Exploit code 1

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other TrueConf CVEs

Every TrueConf CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-72529 TrueConf Server Missing Authentication for Critical Function Vulnerability KEV EPSS 1% 9.8, critical
  • CVE-2026-3502 TrueConf Client Download of Code Without Integrity Check Vulnerability KEV EPSS 0.3% 7.8, high

Beyond this page

Is CVE-2026-72530 in your network?

This page tells you how dangerous CVE-2026-72530 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2026-72530 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-72530 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.