How severe is CVE-2026-72530?

CVE-2026-72530 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-72530 being actively exploited?

Yes. CVE-2026-72530 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-08-20, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2026-72530?

CVE-2026-72530 primarily affects Trueconf Trueconf Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-72530?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

When was CVE-2026-72530 published?

CVE-2026-72530 was published on 2026-08-19 and last updated on 2026-08-21.

CVE-2026-72530

CVE-2026-72530 is a critical-severity vulnerability in Trueconf Trueconf Server with a CVSS 3.x base score of 9.0. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2026-08-20). The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
CVSS v4: 9.5
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2026-08-20)
Weakness: CWE-94
Affected product: Trueconf Trueconf Server
Published: 2026-08-19
Last modified: 2026-08-21

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.

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 3.x base score of 9.0, rated critical severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-72530 being actively exploited?: Yes. CVE-2026-72530 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-08-20, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2026-72530?: CVE-2026-72530 primarily affects Trueconf Trueconf Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-72530?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
When was CVE-2026-72530 published?: CVE-2026-72530 was published on 2026-08-19 and last updated on 2026-08-21.

References

Affected products (2)

cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:windows:*:*
cpe:2.3:a:trueconf:trueconf_server:*:*:*:*:*:linux_kernel:*:*

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