CVE-2026-72530

EUVD-2026-62588
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.
Code Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
KasperskyCNA
9 CRITICAL
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 76.21%
Affected Products (NVD)
VendorProductVersion
trueconftrueconf_server
𝑥
< 5.3.9.10013
trueconftrueconf_server
𝑥
< 5.3.9.10015
trueconftrueconf_server
5.4.0.12689 ≤
𝑥
< 5.4.9.10072
trueconftrueconf_server
5.4.0.12700 ≤
𝑥
< 5.4.9.10019
trueconftrueconf_server
5.5.0.13826 ≤
𝑥
< 5.5.5.10010
trueconftrueconf_server
5.5.0.13828 ≤
𝑥
< 5.5.5.10009
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
trueconftrueconf
𝑥
< 5.3
CNA
trueconftrueconf
5.3 ≤
𝑥
< 5.3.9
CNA
trueconftrueconf
5.4 ≤
𝑥
< 5.4.9
CNA
trueconftrueconf
5.5 ≤
𝑥
< 5.5.5
CNA
Common Weakness Enumeration
References
https://ics-cert.kaspersky.com/advisories/2026/08/11/trueconf-server-breakout-from-isolated-environment/
https://securelist.com/tr/head-mare-targets-trueconf-server-with-phantomcore/120988/
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-72530