Vigie VulnDBEuropean-hosted Vulnerability DB

CVE-2026-72530

At a glance

Severity
CRITICAL 9.5
Exploitation
Known exploited (CISA KEV) · added 2026-08-20
Exploited per ENISA since 2026-08-20
EPSS
EPSS 1.69 % · percentile 77 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
Kaspersky
NVD status
Analyzed

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.

Scores

VersionScoreVectorScored by
CVSS 4.0CRITICAL 9.5CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:HKaspersky
CVSS 3.1CRITICAL 9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HKaspersky
CVSS 4.0CRITICAL 9.5CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD · vulnerability@kaspersky.com (Secondary)
CVSS 3.1CRITICAL 9.0CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:HNVD · vulnerability@kaspersky.com (Secondary)

Weaknesses (CWE)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
TrueConf · TrueConf Serveraffected * < 5.3 ; affected 5.3 < 5.3.9 ; affected 5.4 < 5.4.9 ; affected 5.5 < 5.5.5

References

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
CISA Known Exploited VulnerabilitiesCC0 1.0
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD