Alcatel-Lucent IP-Touch Telephone running OmniPCX Enterprise 7.0 and later enables the mini switch by default, which allows attackers to gain access to the voice VLAN via daisy-chained systems.

The Communication Server in Alcatel-Lucent OmniPCX Enterprise 7.1 and earlier caches an IP address during a TFTP request from an IP Touch phone, and uses this IP address as the destination for all subsequent VoIP packets to this phone, which allows remote attackers to cause a denial of service (loss of audio) or intercept voice communications via a crafted TFTP request containing the phone's MAC address in the filename.

cgi-data/FastJSData.cgi in OmniPCX Office with Internet Access services OXO210 before 210/091.001, OXO600 before 610/014.001, and other versions, allows remote attackers to execute arbitrary commands and "obtain OXO resources" via shell metacharacters in the id2 parameter.

Alcatel OmniPCX 4400 installs known user accounts and passwords in the /etc/password file by default, which allows remote attackers to gain unauthorized access.

The Session Initiation Protocol (SIP) implementation in Alcatel OmniPCX Enterprise 5.0 Lx allows remote attackers to cause a denial of service and possibly execute arbitrary code via crafted INVITE messages, as demonstrated by the OUSPG PROTOS c07-sip test suite.

FTP service in Alcatel OmniPCX 4400 allows the "halt" user to gain root privileges by modifying root's .profile file.

Alcatel 4400 installs the /chetc/shutdown command with setgid privileges, which allows many different local users to shut down the system.

Alcatel OmniPCX 4400 installs files with world-writable permissions, which allows local users to reconfigure the system and possibly gain privileges.

Multiple stack-based buffer overflows in unspecified CGI programs in the Unified Maintenance Tool web interface in the embedded web server in the Communication Server (CS) in Alcatel-Lucent OmniPCX Enterprise before R9.0 H1.301.50 allow remote attackers to execute arbitrary code via crafted HTTP headers.