Bug 2571716 (CVE-2026-123040)

Summary: CVE-2026-123040 trueconf-server: TrueConf Server: Local privilege escalation via incorrect default permissions
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in TrueConf Server. Due to incorrect default permissions, a local attacker with service-level access can exploit this vulnerability to escalate privileges. Successful exploitation allows the attacker to gain full administrative root access on the host system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-11-11 14:11:19 UTC
An attacker who gains the ability to execute arbitrary code on a system with TrueConf Server (Linux) versions from 4.7.2 up to, but not including, 5.5.6 installed, running as the user trueconf (by exploiting some other vulnerability), can elevate their privileges to root.