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CVE-2026-72529

TrueConf Server Missing Authentication for Critical Function

9.8 CRITICALActively exploited (CISA KEV)Public exploitEPSS 1.46%
  1. Published19 Aug 2026
  2. Added to CISA KEV20 Aug 2026
  3. Remediation due23 Aug 2026
Actively exploited (CISA KEV)

TrueConf Server contains a missing authentication for critical function vulnerability which could allow a remote unauthorized attacker with network access via port 4307/TCP to execute an arbitrary script.

Added to KEV: 20 Aug 2026Federal remediation due: 23 Aug 2026

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 execute an arbitrary script by calling an undocumented function.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Trueconf Server≥ 5.4.0.12700 < 5.4.9.10019 · ≥ 5.5.0.13828 < 5.5.5.10009 · < 5.3.9.10015 · ≥ 5.4.0.12689 < 5.4.9.10072

Remediation

Fixed in
Trueconf Server≥ 5.4.9.10019

References

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Frequently asked

Is CVE-2026-72529 being actively exploited?

Yes. CVE-2026-72529 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 20 Aug 2026.

How severe is CVE-2026-72529?

CVE-2026-72529 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.46% probability of exploitation.

Which products are affected by CVE-2026-72529?

Affected products include Trueconf Server.

How do I fix CVE-2026-72529?

Upgrade affected software to a fixed version, for example Trueconf Server 5.4.9.10019 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-72529 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.